Implement the long-awaited module->file cache database. A userland
tool (kldxref(8)) keeps a cache of what modules and versions are inside what .ko files. I have tested this on both Alpha and i386. Submitted by: bp
This commit is contained in:
Peter Wemm
parent
2e76c457bf
commit
505222d35f
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=83321
@ -65,7 +65,7 @@ command_boot(int argc, char *argv[])
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}
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/* find/load the kernel module */
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if (mod_load(argv[1], argc - 2, argv + 2) != 0)
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if (mod_loadkld(argv[1], argc - 2, argv + 2) != 0)
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return(CMD_ERROR);
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/* we have consumed all arguments */
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argc = 1;
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@ -343,11 +343,10 @@ loadakernel(int try, int argc, char* argv[])
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char *cp;
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for (try = 0; (cp = getbootfile(try)) != NULL; try++)
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if (mod_load(cp, argc - 1, argv + 1) != 0)
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if (mod_loadkld(cp, argc - 1, argv + 1) != 0)
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printf("can't load '%s'\n", cp);
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else
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return 1;
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return 0;
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}
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@ -173,10 +173,12 @@ struct file_metadata
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};
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struct preloaded_file;
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struct mod_depend;
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struct kernel_module
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{
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char *m_name; /* module name */
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int m_version; /* module version */
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/* char *m_args;*/ /* arguments for the module */
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struct preloaded_file *m_fp;
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struct kernel_module *m_next;
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@ -215,15 +217,16 @@ struct file_format
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extern struct file_format *file_formats[]; /* supplied by consumer */
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extern struct preloaded_file *preloaded_files;
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int mod_load(char *name, int argc, char *argv[]);
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int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
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int mod_loadobj(char *type, char *name);
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int mod_loadkld(const char *name, int argc, char *argv[]);
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struct preloaded_file *file_alloc(void);
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struct preloaded_file *file_findfile(char *name, char *type);
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struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
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void file_discard(struct preloaded_file *fp);
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void file_addmetadata(struct preloaded_file *fp, int type, size_t size, void *p);
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int file_addmodule(struct preloaded_file *fp, char *modname,
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int file_addmodule(struct preloaded_file *fp, char *modname, int version,
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struct kernel_module **newmp);
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@ -64,7 +64,6 @@ aout_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
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vm_offset_t addr;
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int err, kernel;
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u_int pad;
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char *s;
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fp = NULL;
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@ -134,11 +133,7 @@ aout_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
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fp = file_alloc();
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if (kernel)
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setenv("kernelname", filename, 1);
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s = strrchr(filename, '/');
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if (s)
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fp->f_name = strdup(s + 1);
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else
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fp->f_name = strdup(filename);
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fp->f_name = strdup(filename);
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fp->f_type = strdup(kernel ? aout_kerneltype : aout_moduletype);
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/* Page-align the load address */
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@ -83,7 +83,6 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
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Elf_Ehdr *ehdr;
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int err;
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u_int pad;
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char *s;
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ssize_t bytes_read;
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fp = NULL;
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@ -183,11 +182,7 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
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}
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if (ef.kernel)
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setenv("kernelname", filename, 1);
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s = strrchr(filename, '/');
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if (s)
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fp->f_name = strdup(s + 1);
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else
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fp->f_name = strdup(filename);
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fp->f_name = strdup(filename);
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fp->f_type = strdup(ef.kernel ? elf_kerneltype : elf_moduletype);
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#ifdef ELF_VERBOSE
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@ -242,7 +237,6 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
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vm_offset_t ssym, esym;
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Elf_Dyn *dp;
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int ndp;
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char *s;
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int symstrindex;
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int symtabindex;
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long size;
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@ -515,19 +509,6 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
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if (ef->kernel) /* kernel must not depend on anything */
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goto out;
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for (i = 0; i < ndp; i++) {
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if (dp[i].d_tag == NULL)
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break;
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if (dp[i].d_tag != DT_NEEDED)
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continue;
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j = dp[i].d_un.d_ptr;
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if (j < 1 || j > ef->strsz - 2)
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continue;
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s = strdupout((vm_offset_t)&ef->strtab[j]);
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file_addmetadata(fp, MODINFOMD_DEPLIST, strlen(s) + 1, s);
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free(s);
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}
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out:
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if (dp)
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free(dp);
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@ -537,6 +518,7 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
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}
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static char invalid_name[] = "bad";
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char *
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fake_modname(const char *name)
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{
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@ -570,9 +552,11 @@ int
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elf_parse_modmetadata(struct preloaded_file *fp, elf_file_t ef)
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{
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struct mod_metadata md;
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struct mod_depend *mdepend;
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struct mod_version mver;
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Elf_Sym sym;
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char *s, *v, **p, **p_stop;
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int modcnt;
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int modcnt, minfolen;
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if (elf_lookup_symbol(fp, ef, "__start_set_modmetadata_set", &sym) != 0)
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return ENOENT;
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@ -590,12 +574,20 @@ elf_parse_modmetadata(struct preloaded_file *fp, elf_file_t ef)
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if (ef->kernel) /* kernel must not depend on anything */
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break;
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s = strdupout((vm_offset_t)(md.md_cval + ef->off));
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file_addmetadata(fp, MODINFOMD_DEPLIST, strlen(s) + 1, s);
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minfolen = sizeof(*mdepend) + strlen(s) + 1;
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mdepend = malloc(minfolen);
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if (mdepend == NULL)
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return ENOMEM;
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COPYOUT((vm_offset_t)(md.md_data + ef->off), mdepend, sizeof(*mdepend));
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strcpy((char*)(mdepend + 1), s);
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free(s);
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file_addmetadata(fp, MODINFOMD_DEPLIST, minfolen, mdepend);
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free(mdepend);
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break;
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case MDT_VERSION:
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s = strdupout((vm_offset_t)(md.md_cval + ef->off));
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file_addmodule(fp, s, NULL);
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COPYOUT((vm_offset_t)(md.md_data + ef->off), &mver, sizeof(mver));
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file_addmodule(fp, s, mver.mv_version, NULL);
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free(s);
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modcnt++;
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break;
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@ -603,7 +595,7 @@ elf_parse_modmetadata(struct preloaded_file *fp, elf_file_t ef)
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}
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if (modcnt == 0) {
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s = fake_modname(fp->f_name);
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file_addmodule(fp, s, NULL);
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file_addmodule(fp, s, 1, NULL);
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free(s);
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}
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return 0;
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@ -34,25 +34,50 @@
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#include <string.h>
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <sys/queue.h>
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#include "bootstrap.h"
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#define MDIR_REMOVED 0x0001
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#define MDIR_NOHINTS 0x0002
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struct moduledir {
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char *d_path; /* path of modules directory */
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u_char *d_hints; /* content of linker.hints file */
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int d_hintsz; /* size of hints data */
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int d_flags;
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STAILQ_ENTRY(moduledir) d_link;
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};
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static int file_load(char *filename, vm_offset_t dest, struct preloaded_file **result);
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static int file_loadraw(char *type, char *name);
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static int file_load_dependancies(struct preloaded_file *base_mod);
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static char * file_search(char *name);
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struct kernel_module * file_findmodule(struct preloaded_file *fp, char *modname);
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static char *mod_searchmodule(char *name);
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static char * file_search(const char *name, char **extlist);
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static struct kernel_module * file_findmodule(struct preloaded_file *fp, char *modname, struct mod_depend *verinfo);
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static int file_havepath(const char *name);
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static char *mod_searchmodule(char *name, struct mod_depend *verinfo);
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static void file_insert_tail(struct preloaded_file *mp);
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struct file_metadata* metadata_next(struct file_metadata *base_mp, int type);
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static void moduledir_readhints(struct moduledir *mdp);
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static void moduledir_rebuild(void);
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/* load address should be tweaked by first module loaded (kernel) */
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static vm_offset_t loadaddr = 0;
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static const char *default_searchpath ="/boot/kernel;/boot/modules;/modules";
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static STAILQ_HEAD(, moduledir) moduledir_list = STAILQ_HEAD_INITIALIZER(moduledir_list);
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struct preloaded_file *preloaded_files = NULL;
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static char *kld_ext_list[] = {
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".ko",
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"",
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NULL
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};
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/*
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* load an object, either a disk file or code module.
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*
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@ -71,9 +96,9 @@ static int
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command_load(int argc, char *argv[])
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{
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char *typestr;
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int dofile, ch, error;
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int dofile, dokld, ch, error;
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dofile = 0;
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dokld = dofile = 0;
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optind = 1;
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optreset = 1;
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typestr = NULL;
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@ -81,8 +106,11 @@ command_load(int argc, char *argv[])
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command_errmsg = "no filename specified";
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return(CMD_ERROR);
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}
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while ((ch = getopt(argc, argv, "t:")) != -1) {
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while ((ch = getopt(argc, argv, "kt:")) != -1) {
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switch(ch) {
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case 'k':
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dokld = 1;
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break;
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case 't':
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typestr = optarg;
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dofile = 1;
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@ -106,11 +134,19 @@ command_load(int argc, char *argv[])
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}
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return(file_loadraw(typestr, argv[1]));
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}
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/*
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* Do we have explicit KLD load ?
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*/
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if (dokld || file_havepath(argv[1])) {
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error = mod_loadkld(argv[1], argc - 2, argv + 2);
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if (error == EEXIST)
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sprintf(command_errbuf, "warning: KLD '%s' already loaded", argv[1]);
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return (error == 0 ? CMD_OK : CMD_ERROR);
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}
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/*
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* Looks like a request for a module.
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*/
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error = mod_load(argv[1], argc - 2, argv + 2);
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error = mod_load(argv[1], NULL, argc - 2, argv + 2);
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if (error == EEXIST)
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sprintf(command_errbuf, "warning: module '%s' already loaded", argv[1]);
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return (error == 0 ? CMD_OK : CMD_ERROR);
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@ -172,7 +208,7 @@ command_lsmod(int argc, char *argv[])
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if (fp->f_modules) {
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pager_output(" modules: ");
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for (mp = fp->f_modules; mp; mp = mp->m_next) {
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sprintf(lbuf, "%s ", mp->m_name);
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sprintf(lbuf, "%s.%d ", mp->m_name, mp->m_version);
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pager_output(lbuf);
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}
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pager_output("\n");
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@ -222,6 +258,8 @@ static int
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file_load_dependancies(struct preloaded_file *base_file) {
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struct file_metadata *md;
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struct preloaded_file *fp;
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struct mod_depend *verinfo;
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struct kernel_module *mp;
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char *dmodname;
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int error;
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@ -230,12 +268,25 @@ file_load_dependancies(struct preloaded_file *base_file) {
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return (0);
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error = 0;
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do {
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dmodname = (char *)md->md_data;
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if (file_findmodule(NULL, dmodname) == NULL) {
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verinfo = (struct mod_depend*)md->md_data;
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dmodname = (char *)(verinfo + 1);
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if (file_findmodule(NULL, dmodname, verinfo) == NULL) {
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printf("loading required module '%s'\n", dmodname);
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error = mod_load(dmodname, 0, NULL);
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error = mod_load(dmodname, verinfo, 0, NULL);
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if (error)
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break;
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/*
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* If module loaded via kld name which isn't listed
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* in the linker.hints file, we should check if it have
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* required version.
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*/
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mp = file_findmodule(NULL, dmodname, verinfo);
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if (mp == NULL) {
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sprintf(command_errbuf, "module '%s' exists but with wrong version",
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dmodname);
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error = ENOENT;
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break;
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}
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}
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md = metadata_next(md, MODINFOMD_DEPLIST);
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} while (md);
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@ -268,7 +319,7 @@ file_loadraw(char *type, char *name)
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}
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/* locate the file on the load path */
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cp = file_search(name);
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cp = file_search(name, NULL);
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if (cp == NULL) {
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sprintf(command_errbuf, "can't find '%s'", name);
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return(CMD_ERROR);
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@ -321,15 +372,18 @@ file_loadraw(char *type, char *name)
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* If module is already loaded just assign new argc/argv.
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*/
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int
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mod_load(char *modname, int argc, char *argv[])
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mod_load(char *modname, struct mod_depend *verinfo, int argc, char *argv[])
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{
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struct preloaded_file *fp, *last_file;
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struct kernel_module *mp;
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int err;
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char *filename;
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if (file_havepath(modname)) {
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printf("Warning: mod_load() called instead of mod_loadkld() for module '%s'\n", modname);
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return (mod_loadkld(modname, argc, argv));
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}
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/* see if module is already loaded */
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mp = file_findmodule(NULL, modname);
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mp = file_findmodule(NULL, modname, verinfo);
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if (mp) {
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#ifdef moduleargs
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if (mp->m_args)
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@ -340,33 +394,53 @@ mod_load(char *modname, int argc, char *argv[])
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return (0);
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}
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/* locate file with the module on the search path */
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filename = mod_searchmodule(modname);
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filename = mod_searchmodule(modname, verinfo);
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if (filename == NULL) {
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sprintf(command_errbuf, "can't find '%s'", modname);
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return (ENOENT);
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}
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err = mod_loadkld(filename, argc, argv);
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return (err);
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}
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/*
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* Load specified KLD. If path is omitted, then try to locate it via
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* search path.
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*/
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int
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mod_loadkld(const char *kldname, int argc, char *argv[])
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{
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struct preloaded_file *fp, *last_file;
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int err;
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char *filename;
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/*
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* Get fully qualified KLD name
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*/
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filename = file_search(kldname, kld_ext_list);
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if (filename == NULL) {
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sprintf(command_errbuf, "can't find '%s'", kldname);
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return (ENOENT);
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}
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/*
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* Check if KLD already loaded
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*/
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fp = file_findfile(filename, NULL);
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if (fp) {
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sprintf(command_errbuf, "warning: KLD '%s' already loaded", filename);
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free(filename);
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return (0);
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}
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for (last_file = preloaded_files;
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last_file != NULL && last_file->f_next != NULL;
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last_file = last_file->f_next)
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;
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fp = NULL;
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do {
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err = file_load(filename, loadaddr, &fp);
|
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if (err)
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break;
|
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#ifdef moduleargs
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mp = file_findmodule(fp, modname);
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if (mp == NULL) {
|
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sprintf(command_errbuf, "module '%s' not found in the file '%s': %s",
|
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modname, filename, strerror(err));
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err = ENOENT;
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break;
|
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}
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mp->m_args = unargv(argc, argv);
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#else
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fp->f_args = unargv(argc, argv);
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#endif
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loadaddr = fp->f_addr + fp->f_size;
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file_insert_tail(fp); /* Add to the list of loaded files */
|
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if (file_load_dependancies(fp) != 0) {
|
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@ -407,24 +481,38 @@ file_findfile(char *name, char *type)
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* NULL may be passed as a wildcard.
|
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*/
|
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struct kernel_module *
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file_findmodule(struct preloaded_file *fp, char *modname)
|
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file_findmodule(struct preloaded_file *fp, char *modname,
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struct mod_depend *verinfo)
|
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{
|
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struct kernel_module *mp;
|
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struct kernel_module *mp, *best;
|
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int bestver, mver;
|
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|
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if (fp == NULL) {
|
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for (fp = preloaded_files; fp; fp = fp->f_next) {
|
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for (mp = fp->f_modules; mp; mp = mp->m_next) {
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||||
if (strcmp(modname, mp->m_name) == 0)
|
||||
return (mp);
|
||||
}
|
||||
mp = file_findmodule(fp, modname, verinfo);
|
||||
if (mp)
|
||||
return (mp);
|
||||
}
|
||||
return (NULL);
|
||||
}
|
||||
best = NULL;
|
||||
bestver = 0;
|
||||
for (mp = fp->f_modules; mp; mp = mp->m_next) {
|
||||
if (strcmp(modname, mp->m_name) == 0)
|
||||
return (mp);
|
||||
if (strcmp(modname, mp->m_name) == 0) {
|
||||
if (verinfo == NULL)
|
||||
return (mp);
|
||||
mver = mp->m_version;
|
||||
if (mver == verinfo->md_ver_preferred)
|
||||
return (mp);
|
||||
if (mver >= verinfo->md_ver_minimum &&
|
||||
mver <= verinfo->md_ver_maximum &&
|
||||
mver > bestver) {
|
||||
best = mp;
|
||||
bestver = mver;
|
||||
}
|
||||
}
|
||||
}
|
||||
return (NULL);
|
||||
return (best);
|
||||
}
|
||||
/*
|
||||
* Make a copy of (size) bytes of data from (p), and associate them as
|
||||
@ -468,6 +556,57 @@ metadata_next(struct file_metadata *md, int type)
|
||||
return (md);
|
||||
}
|
||||
|
||||
static char *emptyextlist[] = { "", NULL };
|
||||
|
||||
/*
|
||||
* Check if the given file is in place and return full path to it.
|
||||
*/
|
||||
static char *
|
||||
file_lookup(const char *path, const char *name, int namelen, char **extlist)
|
||||
{
|
||||
struct stat st;
|
||||
char *result, *cp, **cpp;
|
||||
int pathlen, extlen, len;
|
||||
|
||||
pathlen = strlen(path);
|
||||
extlen = 0;
|
||||
if (extlist == NULL)
|
||||
extlist = emptyextlist;
|
||||
for (cpp = extlist; *cpp; cpp++) {
|
||||
len = strlen(*cpp);
|
||||
if (len > extlen)
|
||||
extlen = len;
|
||||
}
|
||||
result = malloc(pathlen + namelen + extlen + 2);
|
||||
if (result == NULL)
|
||||
return (NULL);
|
||||
bcopy(path, result, pathlen);
|
||||
if (pathlen > 0 && result[pathlen - 1] != '/')
|
||||
result[pathlen++] = '/';
|
||||
cp = result + pathlen;
|
||||
bcopy(name, cp, namelen);
|
||||
cp += namelen;
|
||||
for (cpp = extlist; *cpp; cpp++) {
|
||||
strcpy(cp, *cpp);
|
||||
if (stat(result, &st) == 0 && S_ISREG(st.st_mode))
|
||||
return result;
|
||||
}
|
||||
free(result);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if file name have any qualifiers
|
||||
*/
|
||||
static int
|
||||
file_havepath(const char *name)
|
||||
{
|
||||
const char *cp;
|
||||
|
||||
archsw.arch_getdev(NULL, name, &cp);
|
||||
return (cp != name || strchr(name, '/') != NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* Attempt to find the file (name) on the module searchpath.
|
||||
* If (name) is qualified in any way, we simply check it and
|
||||
@ -479,86 +618,141 @@ metadata_next(struct file_metadata *md, int type)
|
||||
* it internally.
|
||||
*/
|
||||
static char *
|
||||
file_search(char *name)
|
||||
file_search(const char *name, char **extlist)
|
||||
{
|
||||
char *result;
|
||||
char *path, *sp;
|
||||
const char *cp;
|
||||
struct moduledir *mdp;
|
||||
struct stat sb;
|
||||
char *result;
|
||||
int namelen;
|
||||
|
||||
/* Don't look for nothing */
|
||||
if (name == NULL)
|
||||
return(name);
|
||||
return(NULL);
|
||||
|
||||
if (*name == 0)
|
||||
return(strdup(name));
|
||||
|
||||
/*
|
||||
* See if there's a device on the front, or a directory name.
|
||||
*/
|
||||
archsw.arch_getdev(NULL, name, &cp);
|
||||
if ((cp != name) || (strchr(name, '/') != NULL)) {
|
||||
if (file_havepath(name)) {
|
||||
/* Qualified, so just see if it exists */
|
||||
if (stat(name, &sb) == 0)
|
||||
return(strdup(name));
|
||||
return(NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the module path
|
||||
*/
|
||||
if ((cp = getenv("module_path")) == NULL)
|
||||
cp = default_searchpath;
|
||||
sp = path = strdup(cp);
|
||||
|
||||
/*
|
||||
* Traverse the path, splitting off ';'-delimited components.
|
||||
*/
|
||||
moduledir_rebuild();
|
||||
result = NULL;
|
||||
while((cp = strsep(&path, ";")) != NULL) {
|
||||
result = malloc(strlen(cp) + strlen(name) + 5);
|
||||
strcpy(result, cp);
|
||||
if (cp[strlen(cp) - 1] != '/')
|
||||
strcat(result, "/");
|
||||
strcat(result, name);
|
||||
if ((stat(result, &sb) == 0) &&
|
||||
S_ISREG(sb.st_mode))
|
||||
namelen = strlen(name);
|
||||
STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
|
||||
result = file_lookup(mdp->d_path, name, namelen, extlist);
|
||||
if (result)
|
||||
break;
|
||||
free(result);
|
||||
result = NULL;
|
||||
}
|
||||
free(sp);
|
||||
return(result);
|
||||
}
|
||||
|
||||
#define INT_ALIGN(base, ptr) ptr = \
|
||||
(base) + (((ptr) - (base) + sizeof(int) - 1) & ~(sizeof(int) - 1))
|
||||
|
||||
static char *
|
||||
mod_search_hints(struct moduledir *mdp, const char *modname,
|
||||
struct mod_depend *verinfo)
|
||||
{
|
||||
u_char *cp, *recptr, *bufend, *best;
|
||||
char *result;
|
||||
int *intp, bestver, blen, clen, found, ival, modnamelen, reclen;
|
||||
|
||||
moduledir_readhints(mdp);
|
||||
modnamelen = strlen(modname);
|
||||
found = 0;
|
||||
result = NULL;
|
||||
bestver = 0;
|
||||
if (mdp->d_hints == NULL)
|
||||
goto bad;
|
||||
recptr = mdp->d_hints;
|
||||
bufend = recptr + mdp->d_hintsz;
|
||||
clen = blen = 0;
|
||||
best = cp = NULL;
|
||||
while (recptr < bufend && !found) {
|
||||
intp = (int*)recptr;
|
||||
reclen = *intp++;
|
||||
ival = *intp++;
|
||||
cp = (char*)intp;
|
||||
switch (ival) {
|
||||
case MDT_VERSION:
|
||||
clen = *cp++;
|
||||
if (clen != modnamelen || bcmp(cp, modname, clen) != 0)
|
||||
break;
|
||||
cp += clen;
|
||||
INT_ALIGN(mdp->d_hints, cp);
|
||||
ival = *(int*)cp;
|
||||
cp += sizeof(int);
|
||||
clen = *cp++;
|
||||
if (verinfo == NULL || ival == verinfo->md_ver_preferred) {
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
if (ival >= verinfo->md_ver_minimum &&
|
||||
ival <= verinfo->md_ver_maximum &&
|
||||
ival > bestver) {
|
||||
bestver = ival;
|
||||
best = cp;
|
||||
blen = clen;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
recptr += reclen + sizeof(int);
|
||||
}
|
||||
/*
|
||||
* Finally check if KLD is in the place
|
||||
*/
|
||||
if (found)
|
||||
result = file_lookup(mdp->d_path, cp, clen, NULL);
|
||||
else if (best)
|
||||
result = file_lookup(mdp->d_path, best, blen, NULL);
|
||||
bad:
|
||||
/*
|
||||
* If nothing found or hints is absent - fallback to the old way
|
||||
* by using "kldname[.ko]" as module name.
|
||||
*/
|
||||
if (!found && !bestver && result == NULL)
|
||||
result = file_lookup(mdp->d_path, modname, modnamelen, kld_ext_list);
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Attempt to locate the file containing the module (name)
|
||||
*/
|
||||
static char *
|
||||
mod_searchmodule(char *name)
|
||||
mod_searchmodule(char *name, struct mod_depend *verinfo)
|
||||
{
|
||||
char *tn, *result;
|
||||
|
||||
/* Look for (name).ko */
|
||||
tn = malloc(strlen(name) + 3 + 1);
|
||||
strcpy(tn, name);
|
||||
strcat(tn, ".ko");
|
||||
result = file_search(tn);
|
||||
free(tn);
|
||||
/* Look for just (name) (useful for finding kernels) */
|
||||
if (result == NULL)
|
||||
result = file_search(name);
|
||||
struct moduledir *mdp;
|
||||
char *result;
|
||||
|
||||
moduledir_rebuild();
|
||||
/*
|
||||
* Now we ready to lookup module in the given directories
|
||||
*/
|
||||
result = NULL;
|
||||
STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
|
||||
result = mod_search_hints(mdp, name, verinfo);
|
||||
if (result)
|
||||
break;
|
||||
}
|
||||
|
||||
return(result);
|
||||
}
|
||||
|
||||
int
|
||||
file_addmodule(struct preloaded_file *fp, char *modname,
|
||||
file_addmodule(struct preloaded_file *fp, char *modname, int version,
|
||||
struct kernel_module **newmp)
|
||||
{
|
||||
struct kernel_module *mp;
|
||||
struct mod_depend mdepend;
|
||||
|
||||
mp = file_findmodule(fp, modname);
|
||||
bzero(&mdepend, sizeof(mdepend));
|
||||
mdepend.md_ver_preferred = version;
|
||||
mp = file_findmodule(fp, modname, &mdepend);
|
||||
if (mp)
|
||||
return (EEXIST);
|
||||
mp = malloc(sizeof(struct kernel_module));
|
||||
@ -566,6 +760,7 @@ file_addmodule(struct preloaded_file *fp, char *modname,
|
||||
return (ENOMEM);
|
||||
bzero(mp, sizeof(struct kernel_module));
|
||||
mp->m_name = strdup(modname);
|
||||
mp->m_version = version;
|
||||
mp->m_fp = fp;
|
||||
mp->m_next = fp->f_modules;
|
||||
fp->f_modules = mp;
|
||||
@ -641,3 +836,123 @@ file_insert_tail(struct preloaded_file *fp)
|
||||
}
|
||||
}
|
||||
|
||||
static char *
|
||||
moduledir_fullpath(struct moduledir *mdp, const char *fname)
|
||||
{
|
||||
char *cp;
|
||||
|
||||
cp = malloc(strlen(mdp->d_path) + strlen(fname) + 2);
|
||||
if (cp == NULL)
|
||||
return NULL;
|
||||
strcpy(cp, mdp->d_path);
|
||||
strcat(cp, "/");
|
||||
strcat(cp, fname);
|
||||
return (cp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Read linker.hints file into memory performing some sanity checks.
|
||||
*/
|
||||
static void
|
||||
moduledir_readhints(struct moduledir *mdp)
|
||||
{
|
||||
struct stat st;
|
||||
char *path;
|
||||
int fd, size, version;
|
||||
|
||||
if (mdp->d_hints != NULL || (mdp->d_flags & MDIR_NOHINTS))
|
||||
return;
|
||||
path = moduledir_fullpath(mdp, "linker.hints");
|
||||
if (stat(path, &st) != 0 || st.st_size < (sizeof(version) + sizeof(int)) ||
|
||||
st.st_size > 100 * 1024 || (fd = open(path, O_RDONLY)) < 0) {
|
||||
free(path);
|
||||
mdp->d_flags |= MDIR_NOHINTS;
|
||||
return;
|
||||
}
|
||||
free(path);
|
||||
size = read(fd, &version, sizeof(version));
|
||||
if (size != sizeof(version) || version != LINKER_HINTS_VERSION)
|
||||
goto bad;
|
||||
size = st.st_size - size;
|
||||
mdp->d_hints = malloc(size);
|
||||
if (mdp->d_hints == NULL)
|
||||
goto bad;
|
||||
if (read(fd, mdp->d_hints, size) != size)
|
||||
goto bad;
|
||||
mdp->d_hintsz = size;
|
||||
close(fd);
|
||||
return;
|
||||
bad:
|
||||
close(fd);
|
||||
if (mdp->d_hints) {
|
||||
free(mdp->d_hints);
|
||||
mdp->d_hints = NULL;
|
||||
}
|
||||
mdp->d_flags |= MDIR_NOHINTS;
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Extract directories from the ';' separated list, remove duplicates.
|
||||
*/
|
||||
static void
|
||||
moduledir_rebuild(void)
|
||||
{
|
||||
struct moduledir *mdp, *mtmp;
|
||||
const char *path, *cp, *ep;
|
||||
int cplen;
|
||||
|
||||
path = getenv("module_path");
|
||||
if (path == NULL)
|
||||
path = default_searchpath;
|
||||
/*
|
||||
* Rebuild list of module directories if it changed
|
||||
*/
|
||||
STAILQ_FOREACH(mdp, &moduledir_list, d_link)
|
||||
mdp->d_flags |= MDIR_REMOVED;
|
||||
|
||||
for (ep = path; *ep != 0; ep++) {
|
||||
cp = ep;
|
||||
for (; *ep != 0 && *ep != ';'; ep++)
|
||||
;
|
||||
/*
|
||||
* Ignore trailing slashes
|
||||
*/
|
||||
for (cplen = ep - cp; cplen > 1 && cp[cplen - 1] == '/'; cplen--)
|
||||
;
|
||||
STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
|
||||
if (strlen(mdp->d_path) != cplen || bcmp(cp, mdp->d_path, cplen) != 0)
|
||||
continue;
|
||||
mdp->d_flags &= ~MDIR_REMOVED;
|
||||
break;
|
||||
}
|
||||
if (mdp == NULL) {
|
||||
mdp = malloc(sizeof(*mdp) + cplen + 1);
|
||||
if (mdp == NULL)
|
||||
return;
|
||||
mdp->d_path = (char*)(mdp + 1);
|
||||
bcopy(cp, mdp->d_path, cplen);
|
||||
mdp->d_path[cplen] = 0;
|
||||
mdp->d_hints = NULL;
|
||||
mdp->d_flags = 0;
|
||||
STAILQ_INSERT_TAIL(&moduledir_list, mdp, d_link);
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Delete unused directories if any
|
||||
*/
|
||||
mdp = STAILQ_FIRST(&moduledir_list);
|
||||
while (mdp) {
|
||||
if ((mdp->d_flags & MDIR_REMOVED) == 0) {
|
||||
mdp = STAILQ_NEXT(mdp, d_link);
|
||||
} else {
|
||||
if (mdp->d_hints)
|
||||
free(mdp->d_hints);
|
||||
mtmp = mdp;
|
||||
mdp = STAILQ_NEXT(mdp, d_link);
|
||||
STAILQ_REMOVE(&moduledir_list, mtmp, moduledir, d_link);
|
||||
free(mtmp);
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
@ -50,7 +50,7 @@ i386_autoload(void)
|
||||
/* autoload ACPI support */
|
||||
/* XXX should be in 4th keyed off acpi_load */
|
||||
if ((getenv("acpi_load") && !getenv("hint.acpi.0.disable"))) {
|
||||
error = mod_load("acpi", 0, NULL);
|
||||
error = mod_load("acpi", NULL, 0, NULL);
|
||||
if (error != 0)
|
||||
printf("ACPI autoload failed - %s\n", strerror(error));
|
||||
}
|
||||
|
||||
@ -237,6 +237,9 @@ realinstall: _SUBDIR
|
||||
ln -fs $$l $$t; \
|
||||
done; true
|
||||
.endif
|
||||
.if !defined(NO_XREF)
|
||||
kldxref ${DESTDIR}${KMODDIR}
|
||||
.endif
|
||||
|
||||
install: afterinstall _SUBDIR
|
||||
.if !defined(NOMAN)
|
||||
|
||||
@ -52,8 +52,11 @@
|
||||
int kld_debug = 0;
|
||||
#endif
|
||||
|
||||
static char *linker_search_path(const char *name);
|
||||
/*static char *linker_search_path(const char *name, struct mod_depend *verinfo);*/
|
||||
static const char *linker_basename(const char* path);
|
||||
static int linker_load_module(const char *kldname, const char *modname,
|
||||
struct linker_file *parent, struct mod_depend *verinfo,
|
||||
struct linker_file **lfpp);
|
||||
|
||||
/* Metadata from the static kernel */
|
||||
SET_DECLARE(modmetadata_set, struct mod_metadata);
|
||||
@ -332,29 +335,12 @@ linker_load_file(const char* filename, linker_file_t* result)
|
||||
return error;
|
||||
}
|
||||
|
||||
/* XXX: function parameters are incomplete */
|
||||
int
|
||||
linker_reference_module(const char *modname, linker_file_t *result)
|
||||
{
|
||||
char *pathname;
|
||||
int res;
|
||||
|
||||
/*
|
||||
* There will be a system to look up or guess a file name from
|
||||
* a module name.
|
||||
* For now we just try to load a file with the same name.
|
||||
*/
|
||||
if ((pathname = linker_search_path(modname)) == NULL)
|
||||
return (ENOENT);
|
||||
|
||||
/*
|
||||
* If the module is already loaded or built into the kernel,
|
||||
* linker_load_file() simply bumps it's refcount.
|
||||
*/
|
||||
res = linker_load_file(pathname, result);
|
||||
|
||||
free(pathname, M_LINKER);
|
||||
|
||||
return (res);
|
||||
return linker_load_module(NULL, modname, NULL, NULL, result);
|
||||
}
|
||||
|
||||
linker_file_t
|
||||
@ -699,9 +685,8 @@ linker_ddb_symbol_values(c_linker_sym_t sym, linker_symval_t *symval)
|
||||
int
|
||||
kldload(struct proc* p, struct kldload_args* uap)
|
||||
{
|
||||
char *kldname, *modname;
|
||||
char *pathname = NULL;
|
||||
char *realpath = NULL;
|
||||
const char *filename;
|
||||
linker_file_t lf;
|
||||
int error = 0;
|
||||
|
||||
@ -719,19 +704,19 @@ kldload(struct proc* p, struct kldload_args* uap)
|
||||
if ((error = copyinstr(SCARG(uap, file), pathname, MAXPATHLEN, NULL)) != 0)
|
||||
goto out;
|
||||
|
||||
realpath = linker_search_path(pathname);
|
||||
if (realpath == NULL) {
|
||||
error = ENOENT;
|
||||
goto out;
|
||||
/*
|
||||
* If path do not contain qualified name or any dot in it (kldname.ko, or
|
||||
* kldname.ver.ko) treat it as interface name.
|
||||
*/
|
||||
if (index(pathname, '/') || index(pathname, '.')) {
|
||||
kldname = pathname;
|
||||
modname = NULL;
|
||||
} else {
|
||||
kldname = NULL;
|
||||
modname = pathname;
|
||||
}
|
||||
/* Can't load more than one file with the same name */
|
||||
filename = linker_basename(realpath);
|
||||
if (linker_find_file_by_name(filename)) {
|
||||
error = EEXIST;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if ((error = linker_load_file(realpath, &lf)) != 0)
|
||||
error = linker_load_module(kldname, modname, NULL, NULL, &lf);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
lf->userrefs++;
|
||||
@ -740,8 +725,6 @@ kldload(struct proc* p, struct kldload_args* uap)
|
||||
out:
|
||||
if (pathname)
|
||||
free(pathname, M_TEMP);
|
||||
if (realpath)
|
||||
free(realpath, M_LINKER);
|
||||
mtx_unlock(&Giant);
|
||||
return (error);
|
||||
}
|
||||
@ -1001,6 +984,29 @@ modlist_lookup(const char *name, int ver)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static modlist_t
|
||||
modlist_lookup2(const char *name, struct mod_depend *verinfo)
|
||||
{
|
||||
modlist_t mod, bestmod;
|
||||
int ver;
|
||||
|
||||
if (verinfo == NULL)
|
||||
return modlist_lookup(name, 0);
|
||||
bestmod = NULL;
|
||||
for (mod = TAILQ_FIRST(&found_modules); mod; mod = TAILQ_NEXT(mod, link)) {
|
||||
if (strcmp(mod->name, name) != 0)
|
||||
continue;
|
||||
ver = mod->version;
|
||||
if (ver == verinfo->md_ver_preferred)
|
||||
return mod;
|
||||
if (ver >= verinfo->md_ver_minimum &&
|
||||
ver <= verinfo->md_ver_maximum &&
|
||||
ver > bestmod->version)
|
||||
bestmod = mod;
|
||||
}
|
||||
return bestmod;
|
||||
}
|
||||
|
||||
static modlist_t
|
||||
modlist_newmodule(const char *modname, int version, linker_file_t container)
|
||||
{
|
||||
@ -1170,7 +1176,7 @@ linker_preload(void* arg)
|
||||
}
|
||||
if (nmdp < stop) /* it's a self reference */
|
||||
continue;
|
||||
if (modlist_lookup(modname, 0) == NULL) {
|
||||
if (modlist_lookup2(modname, verinfo) == NULL) {
|
||||
/* ok, the module isn't here yet, we are not finished */
|
||||
resolves = 0;
|
||||
}
|
||||
@ -1234,7 +1240,7 @@ linker_preload(void* arg)
|
||||
if (mp->md_type != MDT_DEPEND)
|
||||
continue;
|
||||
linker_mdt_depend(lf, mp, &modname, &verinfo);
|
||||
mod = modlist_lookup(modname, 0);
|
||||
mod = modlist_lookup2(modname, verinfo);
|
||||
mod->container->refs++;
|
||||
error = linker_file_add_dependancy(lf, mod->container);
|
||||
if (error)
|
||||
@ -1279,6 +1285,7 @@ SYSINIT(preload, SI_SUB_KLD, SI_ORDER_MIDDLE, linker_preload, 0);
|
||||
* character as a separator to be consistent with the bootloader.
|
||||
*/
|
||||
|
||||
static char linker_hintfile[] = "linker.hints";
|
||||
static char linker_path[MAXPATHLEN] = "/boot/kernel;/boot/modules/;/modules/";
|
||||
|
||||
SYSCTL_STRING(_kern, OID_AUTO, module_path, CTLFLAG_RW, linker_path,
|
||||
@ -1287,20 +1294,226 @@ SYSCTL_STRING(_kern, OID_AUTO, module_path, CTLFLAG_RW, linker_path,
|
||||
TUNABLE_STR("module_path", linker_path, sizeof(linker_path));
|
||||
|
||||
static char *linker_ext_list[] = {
|
||||
".ko",
|
||||
"",
|
||||
".ko",
|
||||
NULL
|
||||
};
|
||||
|
||||
/*
|
||||
* Check if file actually exists either with or without extension listed
|
||||
* in the linker_ext_list.
|
||||
* (probably should be generic for the rest of the kernel)
|
||||
*/
|
||||
static char *
|
||||
linker_search_path(const char *name)
|
||||
linker_lookup_file(const char *path, int pathlen,
|
||||
const char *name, int namelen, struct vattr *vap)
|
||||
{
|
||||
struct nameidata nd;
|
||||
struct proc *p = curproc; /* XXX */
|
||||
char *cp, *ep, *result, **cpp;
|
||||
int error, extlen, len, flags;
|
||||
char *result, **cpp;
|
||||
int error, len, extlen, flags;
|
||||
enum vtype type;
|
||||
|
||||
extlen = 0;
|
||||
for (cpp = linker_ext_list; *cpp; cpp++) {
|
||||
len = strlen(*cpp);
|
||||
if (len > extlen)
|
||||
extlen = len;
|
||||
}
|
||||
extlen++; /* trailing '\0' */
|
||||
|
||||
result = malloc((pathlen + namelen + extlen), M_LINKER, M_WAITOK);
|
||||
for (cpp = linker_ext_list; *cpp; cpp++) {
|
||||
bcopy(path, result, pathlen);
|
||||
bcopy(name, result + pathlen, namelen);
|
||||
strcpy(result + namelen + pathlen, *cpp);
|
||||
/*
|
||||
* Attempt to open the file, and return the path if we succeed
|
||||
* and it's a regular file.
|
||||
*/
|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, result, p);
|
||||
flags = FREAD;
|
||||
error = vn_open(&nd, &flags, 0);
|
||||
if (error == 0) {
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
type = nd.ni_vp->v_type;
|
||||
if (vap)
|
||||
VOP_GETATTR(nd.ni_vp, vap, p->p_ucred, p);
|
||||
VOP_UNLOCK(nd.ni_vp, 0, p);
|
||||
vn_close(nd.ni_vp, FREAD, p->p_ucred, p);
|
||||
if (type == VREG)
|
||||
return(result);
|
||||
}
|
||||
}
|
||||
free(result, M_LINKER);
|
||||
return(NULL);
|
||||
}
|
||||
|
||||
#define INT_ALIGN(base, ptr) ptr = \
|
||||
(base) + (((ptr) - (base) + sizeof(int) - 1) & ~(sizeof(int) - 1))
|
||||
|
||||
/*
|
||||
* Lookup KLD which contains requested module in the "linker.hints" file.
|
||||
* If version specification is available, then try to find the best KLD.
|
||||
* Otherwise just find the latest one.
|
||||
*/
|
||||
static char *
|
||||
linker_hints_lookup(const char *path, int pathlen,
|
||||
const char *modname, int modnamelen,
|
||||
struct mod_depend *verinfo)
|
||||
{
|
||||
struct proc *p = curproc;
|
||||
struct ucred *cred = p ? p->p_ucred : NULL;
|
||||
struct nameidata nd;
|
||||
struct vattr vattr, mattr;
|
||||
u_char *hints = NULL;
|
||||
u_char *cp, *recptr, *bufend, *result, *best, *pathbuf;
|
||||
int error, ival, bestver, *intp, reclen, found, flags, clen, blen;
|
||||
|
||||
result = NULL;
|
||||
bestver = found = 0;
|
||||
|
||||
reclen = imax(modnamelen, strlen(linker_hintfile)) + pathlen;
|
||||
pathbuf = malloc(reclen, M_LINKER, M_WAITOK);
|
||||
bcopy(path, pathbuf, pathlen);
|
||||
strcpy(pathbuf + pathlen, linker_hintfile);
|
||||
|
||||
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, pathbuf, p);
|
||||
flags = FREAD;
|
||||
error = vn_open(&nd, &flags, 0);
|
||||
if (error)
|
||||
goto bad;
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
VOP_UNLOCK(nd.ni_vp, 0, p);
|
||||
if (nd.ni_vp->v_type != VREG)
|
||||
goto bad;
|
||||
best = cp = NULL;
|
||||
error = VOP_GETATTR(nd.ni_vp, &vattr, cred, p);
|
||||
if (error)
|
||||
goto bad;
|
||||
/*
|
||||
* XXX: we need to limit this number to some reasonable value
|
||||
*/
|
||||
if (vattr.va_size > 100 * 1024) {
|
||||
printf("hints file too large %ld\n", (long)vattr.va_size);
|
||||
goto bad;
|
||||
}
|
||||
hints = malloc(vattr.va_size, M_TEMP, M_WAITOK);
|
||||
if (hints == NULL)
|
||||
goto bad;
|
||||
error = vn_rdwr(UIO_READ, nd.ni_vp, (caddr_t)hints, vattr.va_size, 0,
|
||||
UIO_SYSSPACE, IO_NODELOCKED, cred, &reclen, p);
|
||||
if (error)
|
||||
goto bad;
|
||||
vn_close(nd.ni_vp, FREAD, cred, p);
|
||||
nd.ni_vp = NULL;
|
||||
if (reclen != 0) {
|
||||
printf("can't read %d\n", reclen);
|
||||
goto bad;
|
||||
}
|
||||
intp = (int*)hints;
|
||||
ival = *intp++;
|
||||
if (ival != LINKER_HINTS_VERSION) {
|
||||
printf("hints file version mismatch %d\n", ival);
|
||||
goto bad;
|
||||
}
|
||||
bufend = hints + vattr.va_size;
|
||||
recptr = (u_char*)intp;
|
||||
clen = blen = 0;
|
||||
while (recptr < bufend && !found) {
|
||||
intp = (int*)recptr;
|
||||
reclen = *intp++;
|
||||
ival = *intp++;
|
||||
cp = (char*)intp;
|
||||
switch (ival) {
|
||||
case MDT_VERSION:
|
||||
clen = *cp++;
|
||||
if (clen != modnamelen || bcmp(cp, modname, clen) != 0)
|
||||
break;
|
||||
cp += clen;
|
||||
INT_ALIGN(hints, cp);
|
||||
ival = *(int*)cp;
|
||||
cp += sizeof(int);
|
||||
clen = *cp++;
|
||||
if (verinfo == NULL || ival == verinfo->md_ver_preferred) {
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
if (ival >= verinfo->md_ver_minimum &&
|
||||
ival <= verinfo->md_ver_maximum &&
|
||||
ival > bestver) {
|
||||
bestver = ival;
|
||||
best = cp;
|
||||
blen = clen;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
recptr += reclen + sizeof(int);
|
||||
}
|
||||
/*
|
||||
* Finally check if KLD is in the place
|
||||
*/
|
||||
if (found)
|
||||
result = linker_lookup_file(path, pathlen, cp, clen, &mattr);
|
||||
else if (best)
|
||||
result = linker_lookup_file(path, pathlen, best, blen, &mattr);
|
||||
if (result && timespeccmp(&mattr.va_mtime, &vattr.va_mtime, >)) {
|
||||
/*
|
||||
* KLD is newer than hints file. What we should do now ?
|
||||
*/
|
||||
printf("warning: KLD '%s' is newer than the linker.hints file\n", result);
|
||||
}
|
||||
bad:
|
||||
if (hints)
|
||||
free(hints, M_TEMP);
|
||||
if (nd.ni_vp != NULL)
|
||||
vn_close(nd.ni_vp, FREAD, cred, p);
|
||||
/*
|
||||
* If nothing found or hints is absent - fallback to the old way
|
||||
* by using "kldname[.ko]" as module name.
|
||||
*/
|
||||
if (!found && !bestver && result == NULL)
|
||||
result = linker_lookup_file(path, pathlen, modname, modnamelen, NULL);
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Lookup KLD which contains requested module in the all directories.
|
||||
*/
|
||||
static char *
|
||||
linker_search_module(const char *modname, int modnamelen,
|
||||
struct mod_depend *verinfo)
|
||||
{
|
||||
char *cp, *ep, *result;
|
||||
|
||||
/*
|
||||
* traverse the linker path
|
||||
*/
|
||||
for (cp = linker_path; *cp; cp = ep + 1) {
|
||||
|
||||
/* find the end of this component */
|
||||
for (ep = cp; (*ep != 0) && (*ep != ';'); ep++)
|
||||
;
|
||||
result = linker_hints_lookup(cp, ep - cp, modname, modnamelen, verinfo);
|
||||
if (result != NULL)
|
||||
return(result);
|
||||
if (*ep == 0)
|
||||
break;
|
||||
}
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* Search for module in all directories listed in the linker_path.
|
||||
*/
|
||||
static char *
|
||||
linker_search_kld(const char *name)
|
||||
{
|
||||
char *cp, *ep, *result, **cpp;
|
||||
int extlen, len;
|
||||
|
||||
/* qualified at all? */
|
||||
if (index(name, '/'))
|
||||
return(linker_strdup(name));
|
||||
@ -1314,42 +1527,15 @@ linker_search_path(const char *name)
|
||||
extlen++; /* trailing '\0' */
|
||||
|
||||
/* traverse the linker path */
|
||||
cp = linker_path;
|
||||
len = strlen(name);
|
||||
for (;;) {
|
||||
|
||||
for (ep = linker_path; *ep; ep++) {
|
||||
cp = ep;
|
||||
/* find the end of this component */
|
||||
for (ep = cp; (*ep != 0) && (*ep != ';'); ep++)
|
||||
for (; *ep != 0 && *ep != ';'; ep++)
|
||||
;
|
||||
result = malloc((len + (ep - cp) + extlen + 1), M_LINKER, M_WAITOK);
|
||||
if (result == NULL) /* actually ENOMEM */
|
||||
return(NULL);
|
||||
for (cpp = linker_ext_list; *cpp; cpp++) {
|
||||
strncpy(result, cp, ep - cp);
|
||||
strcpy(result + (ep - cp), "/");
|
||||
strcat(result, name);
|
||||
strcat(result, *cpp);
|
||||
/*
|
||||
* Attempt to open the file, and return the path if we succeed
|
||||
* and it's a regular file.
|
||||
*/
|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, result, p);
|
||||
flags = FREAD;
|
||||
error = vn_open(&nd, &flags, 0);
|
||||
if (error == 0) {
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
type = nd.ni_vp->v_type;
|
||||
VOP_UNLOCK(nd.ni_vp, 0, p);
|
||||
vn_close(nd.ni_vp, FREAD, p->p_ucred, p);
|
||||
if (type == VREG)
|
||||
return(result);
|
||||
}
|
||||
}
|
||||
free(result, M_LINKER);
|
||||
|
||||
if (*ep == 0)
|
||||
break;
|
||||
cp = ep + 1;
|
||||
result = linker_lookup_file(cp, ep - cp, name, len, NULL);
|
||||
if (result != NULL)
|
||||
return(result);
|
||||
}
|
||||
return(NULL);
|
||||
}
|
||||
@ -1372,23 +1558,41 @@ linker_basename(const char* path)
|
||||
* if "parent" is not NULL, register a reference to it.
|
||||
*/
|
||||
static int
|
||||
linker_load_module(const char *modname, struct linker_file *parent)
|
||||
linker_load_module(const char *kldname, const char *modname,
|
||||
struct linker_file *parent, struct mod_depend *verinfo,
|
||||
struct linker_file **lfpp)
|
||||
{
|
||||
linker_file_t lfdep;
|
||||
const char *filename;
|
||||
char *pathname;
|
||||
int error;
|
||||
|
||||
/*
|
||||
* There will be a system to look up or guess a file name from
|
||||
* a module name.
|
||||
* For now we just try to load a file with the same name.
|
||||
*/
|
||||
pathname = linker_search_path(modname);
|
||||
if (modname == NULL) {
|
||||
/*
|
||||
* We have to load KLD
|
||||
*/
|
||||
KASSERT(verinfo == NULL, ("linker_load_module: verinfo is not NULL"));
|
||||
pathname = linker_search_kld(kldname);
|
||||
} else {
|
||||
if (modlist_lookup2(modname, verinfo) != NULL)
|
||||
return (EEXIST);
|
||||
if (kldname == NULL) {
|
||||
/*
|
||||
* Need to find a KLD with required module
|
||||
*/
|
||||
pathname = linker_search_module(modname, strlen(modname), verinfo);
|
||||
} else
|
||||
pathname = linker_strdup(kldname);
|
||||
}
|
||||
if (pathname == NULL)
|
||||
return ENOENT;
|
||||
return (ENOENT);
|
||||
|
||||
/* Can't load more than one file with the same basename */
|
||||
/*
|
||||
* Can't load more than one file with the same basename
|
||||
* XXX: Actually it should be possible to have multiple KLDs
|
||||
* with the same basename but different path because they can provide
|
||||
* different versions of the same modules.
|
||||
*/
|
||||
filename = linker_basename(pathname);
|
||||
if (linker_find_file_by_name(filename)) {
|
||||
error = EEXIST;
|
||||
@ -1399,11 +1603,18 @@ linker_load_module(const char *modname, struct linker_file *parent)
|
||||
error = linker_load_file(pathname, &lfdep);
|
||||
if (error)
|
||||
break;
|
||||
if (modname && verinfo && modlist_lookup2(modname, verinfo) == NULL) {
|
||||
linker_file_unload(lfdep);
|
||||
error = ENOENT;
|
||||
break;
|
||||
}
|
||||
if (parent) {
|
||||
error = linker_file_add_dependancy(parent, lfdep);
|
||||
if (error)
|
||||
break;
|
||||
}
|
||||
if (lfpp)
|
||||
*lfpp = lfdep;
|
||||
} while(0);
|
||||
out:
|
||||
if (pathname)
|
||||
@ -1421,6 +1632,7 @@ linker_load_dependancies(linker_file_t lf)
|
||||
linker_file_t lfdep;
|
||||
struct mod_metadata **start, **stop, **mdp, **nmdp;
|
||||
struct mod_metadata *mp, *nmp;
|
||||
struct mod_depend *verinfo;
|
||||
modlist_t mod;
|
||||
const char *modname, *nmodname;
|
||||
int ver, error = 0, count;
|
||||
@ -1454,7 +1666,7 @@ linker_load_dependancies(linker_file_t lf)
|
||||
mp = linker_reloc_ptr(lf, *mdp);
|
||||
if (mp->md_type != MDT_DEPEND)
|
||||
continue;
|
||||
modname = linker_reloc_ptr(lf, mp->md_cval);
|
||||
linker_mdt_depend(lf, mp, &modname, &verinfo);
|
||||
nmodname = NULL;
|
||||
for (nmdp = start; nmdp < stop; nmdp++) {
|
||||
nmp = linker_reloc_ptr(lf, *nmdp);
|
||||
@ -1466,7 +1678,7 @@ linker_load_dependancies(linker_file_t lf)
|
||||
}
|
||||
if (nmdp < stop) /* early exit, it's a self reference */
|
||||
continue;
|
||||
mod = modlist_lookup(modname, 0);
|
||||
mod = modlist_lookup2(modname, verinfo);
|
||||
if (mod) { /* woohoo, it's loaded already */
|
||||
lfdep = mod->container;
|
||||
lfdep->refs++;
|
||||
@ -1475,7 +1687,7 @@ linker_load_dependancies(linker_file_t lf)
|
||||
break;
|
||||
continue;
|
||||
}
|
||||
error = linker_load_module(modname, lf);
|
||||
error = linker_load_module(NULL, modname, lf, verinfo, NULL);
|
||||
if (error) {
|
||||
printf("KLD %s: depends on %s - not available\n",
|
||||
lf->filename, modname);
|
||||
|
||||
@ -189,6 +189,8 @@ int linker_ddb_symbol_values(c_linker_sym_t _sym, linker_symval_t *_symval);
|
||||
|
||||
#define MODINFOMD_DEPLIST (0x4001 | MODINFOMD_NOCOPY) /* depends on */
|
||||
|
||||
#define LINKER_HINTS_VERSION 1 /* linker.hints file version */
|
||||
|
||||
#ifdef _KERNEL
|
||||
|
||||
/*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user