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Add cwd, root and statm (modeled on a 2.4.20 kernel). De-obfuscate

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linprocfs_init() a little and remove some gratuitous whitespace.
This commit is contained in:
Dag-Erling Smørgrav 2003-09-09 08:19:06 +00:00
parent 48652808c4
commit 0dd872f5bb
1 changed files with 96 additions and 17 deletions
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113
sys/compat/linprocfs/linprocfs.c
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@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
#include <sys/blist.h>
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/filedesc.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/linker.h>
@ -546,6 +547,37 @@ linprocfs_doprocstat(PFS_FILL_ARGS)
return (0);
}
/*
* Filler function for proc/pid/statm
*/
static int
linprocfs_doprocstatm(PFS_FILL_ARGS)
{
struct kinfo_proc kp;
segsz_t lsize;
PROC_LOCK(p);
fill_kinfo_proc(p, &kp);
PROC_UNLOCK(p);
/*
* See comments in linprocfs_doprocstatus() regarding the
* computation of lsize.
*/
/* size resident share trs drs lrs dt */
sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size));
sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize);
sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */
sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize);
sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize));
lsize = B2P(kp.ki_size) - kp.ki_dsize -
kp.ki_ssize - kp.ki_tsize - 1;
sbuf_printf(sb, "%ju ", (uintmax_t)lsize);
sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */
return (0);
}
/*
* Filler function for proc/pid/status
*/
@ -682,6 +714,41 @@ linprocfs_doprocstatus(PFS_FILL_ARGS)
return (0);
}
/*
* Filler function for proc/pid/cwd
*/
static int
linprocfs_doproccwd(PFS_FILL_ARGS)
{
char *fullpath = "unknown";
char *freepath = NULL;
vn_fullpath(td, p->p_fd->fd_cdir, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
return (0);
}
/*
* Filler function for proc/pid/root
*/
static int
linprocfs_doprocroot(PFS_FILL_ARGS)
{
struct vnode *rvp;
char *fullpath = "unknown";
char *freepath = NULL;
rvp = jailed(p->p_ucred) ? p->p_fd->fd_jdir : p->p_fd->fd_rdir;
vn_fullpath(td, rvp, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
return (0);
}
/*
* Filler function for proc/pid/cmdline
*/
@ -835,47 +902,59 @@ linprocfs_init(PFS_INIT_ARGS)
root = pi->pi_root;
#define PFS_CREATE_FILE(name) \
pfs_create_file(root, #name, &linprocfs_do##name, NULL, NULL, PFS_RD)
PFS_CREATE_FILE(cmdline);
PFS_CREATE_FILE(cpuinfo);
/* /proc/* */
pfs_create_file(root, "cmdline", &linprocfs_docmdline,
NULL, NULL, PFS_RD);
pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo,
NULL, NULL, PFS_RD);
#if 0
PFS_CREATE_FILE(devices);
pfs_create_file(root, "devices", &linprocfs_dodevices,
NULL, NULL, PFS_RD);
#endif
PFS_CREATE_FILE(loadavg);
PFS_CREATE_FILE(meminfo);
pfs_create_file(root, "loadavg", &linprocfs_doloadavg,
NULL, NULL, PFS_RD);
pfs_create_file(root, "meminfo", &linprocfs_domeminfo,
NULL, NULL, PFS_RD);
#if 0
PFS_CREATE_FILE(modules);
pfs_create_file(root, "modules", &linprocfs_domodules,
NULL, NULL, PFS_RD);
#endif
PFS_CREATE_FILE(mtab);
PFS_CREATE_FILE(stat);
PFS_CREATE_FILE(uptime);
PFS_CREATE_FILE(version);
#undef PFS_CREATE_FILE
pfs_create_file(root, "mtab", &linprocfs_domtab,
NULL, NULL, PFS_RD);
pfs_create_link(root, "self", &procfs_docurproc,
NULL, NULL, 0);
pfs_create_file(root, "stat", &linprocfs_dostat,
NULL, NULL, PFS_RD);
pfs_create_file(root, "uptime", &linprocfs_douptime,
NULL, NULL, PFS_RD);
pfs_create_file(root, "version", &linprocfs_doversion,
NULL, NULL, PFS_RD);
/* /proc/net/* */
dir = pfs_create_dir(root, "net", NULL, NULL, 0);
pfs_create_file(dir, "dev", &linprocfs_donetdev,
NULL, NULL, PFS_RD);
/* /proc/<pid>/* */
dir = pfs_create_dir(root, "pid", NULL, NULL, PFS_PROCDEP);
pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline,
NULL, NULL, PFS_RD);
pfs_create_link(dir, "cwd", &linprocfs_doproccwd,
NULL, NULL, 0);
pfs_create_file(dir, "environ", &linprocfs_doprocenviron,
NULL, NULL, PFS_RD);
pfs_create_link(dir, "exe", &procfs_doprocfile,
NULL, &procfs_notsystem, 0);
pfs_create_file(dir, "maps", &linprocfs_doprocmaps,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "mem", &procfs_doprocmem,
&procfs_attr, &procfs_candebug, PFS_RDWR|PFS_RAW);
pfs_create_link(dir, "root", &linprocfs_doprocroot,
NULL, NULL, 0);
pfs_create_file(dir, "stat", &linprocfs_doprocstat,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "statm", &linprocfs_doprocstatm,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "status", &linprocfs_doprocstatus,
NULL, NULL, PFS_RD);