Fix the powerpc copyout fixup from r356113
Summary: r356113 used an older patch, which predated the freebsd_copyout_auxargs() addition. Fix this by using a private powerpc_copyout_auxargs() instead, and keep it private to powerpc, not in MI files. Reviewed by: kib, bdragon Differential Revision: https://reviews.freebsd.org/D22935
This commit is contained in:
Justin Hibbits
parent
742654c958
commit
741dfd86b3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=356129
@ -1323,102 +1323,6 @@ __CONCAT(exec_, __elfN(imgact))(struct image_params *imgp)
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#define suword __CONCAT(suword, __ELF_WORD_SIZE)
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#ifdef __powerpc__
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#define OLD_AT_NULL AT_NULL
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#define OLD_AT_IGNORE AT_IGNORE
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#define OLD_AT_EXECFD AT_EXECFD
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#define OLD_AT_PHDR AT_PHDR
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#define OLD_AT_PHENT AT_PHENT
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#define OLD_AT_PHNUM AT_PHNUM
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#define OLD_AT_PAGESZ AT_PAGESZ
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#define OLD_AT_BASE AT_BASE
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#define OLD_AT_FLAGS AT_FLAGS
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#define OLD_AT_ENTRY AT_ENTRY
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#define OLD_AT_NOTELF AT_NOTELF
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#define OLD_AT_UID AT_UID
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#define OLD_AT_EUID AT_EUID
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#define OLD_AT_EXECPATH 13
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#define OLD_AT_CANARY 14
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#define OLD_AT_CANARYLEN 15
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#define OLD_AT_OSRELDATE 16
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#define OLD_AT_NCPUS 17
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#define OLD_AT_PAGESIZES 18
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#define OLD_AT_PAGESIZESLEN 19
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#define OLD_AT_STACKPROT 21
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#define OLD_AT_TIMEKEEP AT_TIMEKEEP
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#define OLD_AT_EHDRFLAGS AT_EHDRFLAGS
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#define OLD_AT_HWCAP AT_HWCAP
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#define OLD_AT_HWCAP2 AT_HWCAP2
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#define OLD_AT_COUNT 27 /* Count of defined aux entry types. */
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static int
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__elfN(freebsd_fixup_old_auxargs)(uintptr_t *stack_base,
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struct image_params *imgp)
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{
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Elf_Auxargs *args = (Elf_Auxargs *)imgp->auxargs;
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Elf_Auxinfo *argarray, *pos;
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Elf_Addr *base, *auxbase;
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int error;
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base = (Elf_Addr *)*stack_base;
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auxbase = base + imgp->args->argc + 1 + imgp->args->envc + 1;
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argarray = pos = malloc(OLD_AT_COUNT * sizeof(*pos), M_TEMP,
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M_WAITOK | M_ZERO);
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if (args->execfd != -1)
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AUXARGS_ENTRY(pos, OLD_AT_EXECFD, args->execfd);
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AUXARGS_ENTRY(pos, OLD_AT_PHDR, args->phdr);
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AUXARGS_ENTRY(pos, OLD_AT_PHENT, args->phent);
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AUXARGS_ENTRY(pos, OLD_AT_PHNUM, args->phnum);
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AUXARGS_ENTRY(pos, OLD_AT_PAGESZ, args->pagesz);
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AUXARGS_ENTRY(pos, OLD_AT_FLAGS, args->flags);
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AUXARGS_ENTRY(pos, OLD_AT_ENTRY, args->entry);
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AUXARGS_ENTRY(pos, OLD_AT_BASE, args->base);
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AUXARGS_ENTRY(pos, OLD_AT_EHDRFLAGS, args->hdr_eflags);
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if (imgp->execpathp != 0)
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AUXARGS_ENTRY(pos, OLD_AT_EXECPATH, imgp->execpathp);
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AUXARGS_ENTRY(pos, OLD_AT_OSRELDATE,
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imgp->proc->p_ucred->cr_prison->pr_osreldate);
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if (imgp->canary != 0) {
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AUXARGS_ENTRY(pos, OLD_AT_CANARY, imgp->canary);
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AUXARGS_ENTRY(pos, OLD_AT_CANARYLEN, imgp->canarylen);
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}
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AUXARGS_ENTRY(pos, OLD_AT_NCPUS, mp_ncpus);
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if (imgp->pagesizes != 0) {
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AUXARGS_ENTRY(pos, OLD_AT_PAGESIZES, imgp->pagesizes);
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AUXARGS_ENTRY(pos, OLD_AT_PAGESIZESLEN, imgp->pagesizeslen);
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}
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if (imgp->sysent->sv_timekeep_base != 0) {
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AUXARGS_ENTRY(pos, OLD_AT_TIMEKEEP,
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imgp->sysent->sv_timekeep_base);
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}
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AUXARGS_ENTRY(pos, OLD_AT_STACKPROT, imgp->sysent->sv_shared_page_obj
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!= NULL && imgp->stack_prot != 0 ? imgp->stack_prot :
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imgp->sysent->sv_stackprot);
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if (imgp->sysent->sv_hwcap != NULL)
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AUXARGS_ENTRY(pos, OLD_AT_HWCAP, *imgp->sysent->sv_hwcap);
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if (imgp->sysent->sv_hwcap2 != NULL)
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AUXARGS_ENTRY(pos, OLD_AT_HWCAP2, *imgp->sysent->sv_hwcap2);
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AUXARGS_ENTRY(pos, OLD_AT_NULL, 0);
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free(imgp->auxargs, M_TEMP);
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imgp->auxargs = NULL;
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KASSERT(pos - argarray <= OLD_AT_COUNT, ("Too many auxargs"));
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error = copyout(argarray, auxbase, sizeof(*argarray) * OLD_AT_COUNT);
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free(argarray, M_TEMP);
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if (error != 0)
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return (error);
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base--;
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if (suword(base, imgp->args->argc) == -1)
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return (EFAULT);
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*stack_base = (uintptr_t)base;
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return (0);
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}
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#endif /* __powerpc__ */
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int
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__elfN(freebsd_copyout_auxargs)(struct image_params *imgp, uintptr_t base)
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{
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@ -1479,11 +1383,6 @@ __elfN(freebsd_fixup)(uintptr_t *stack_base, struct image_params *imgp)
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{
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Elf_Addr *base;
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#ifdef __powerpc__
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if (imgp->proc->p_osrel < P_OSREL_POWERPC_NEW_AUX_ARGS)
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return (__elfN(freebsd_fixup_old_auxargs)(stack_base, imgp));
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#endif /* __powerpc__ */
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base = (Elf_Addr *)*stack_base;
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base--;
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if (suword(base, imgp->args->argc) == -1)
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@ -114,4 +114,32 @@ __ElfType(Auxinfo);
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#define ET_DYN_LOAD_ADDR 0x01010000
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#define AT_OLD_NULL AT_NULL
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#define AT_OLD_IGNORE AT_IGNORE
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#define AT_OLD_EXECFD AT_EXECFD
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#define AT_OLD_PHDR AT_PHDR
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#define AT_OLD_PHENT AT_PHENT
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#define AT_OLD_PHNUM AT_PHNUM
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#define AT_OLD_PAGESZ AT_PAGESZ
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#define AT_OLD_BASE AT_BASE
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#define AT_OLD_FLAGS AT_FLAGS
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#define AT_OLD_ENTRY AT_ENTRY
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#define AT_OLD_NOTELF AT_NOTELF
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#define AT_OLD_UID AT_UID
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#define AT_OLD_EUID AT_EUID
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#define AT_OLD_EXECPATH 13
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#define AT_OLD_CANARY 14
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#define AT_OLD_CANARYLEN 15
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#define AT_OLD_OSRELDATE 16
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#define AT_OLD_NCPUS 17
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#define AT_OLD_PAGESIZES 18
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#define AT_OLD_PAGESIZESLEN 19
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#define AT_OLD_STACKPROT 21
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#define AT_OLD_TIMEKEEP AT_TIMEKEEP
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#define AT_OLD_EHDRFLAGS AT_EHDRFLAGS
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#define AT_OLD_HWCAP AT_HWCAP
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#define AT_OLD_HWCAP2 AT_HWCAP2
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#define AT_OLD_COUNT 27 /* Count of defined aux entry types. */
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#endif /* !_MACHINE_ELF_H_ */
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@ -41,6 +41,8 @@
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#include <sys/fcntl.h>
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#include <sys/sysent.h>
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#include <sys/imgact_elf.h>
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#include <sys/jail.h>
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#include <sys/smp.h>
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#include <sys/syscall.h>
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#include <sys/sysctl.h>
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#include <sys/signalvar.h>
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@ -57,6 +59,8 @@
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#include <machine/reg.h>
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#include <machine/md_var.h>
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#include <powerpc/powerpc/elf_common.c>
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#ifdef __powerpc64__
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#include <compat/freebsd32/freebsd32_proto.h>
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#include <compat/freebsd32/freebsd32_util.h>
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@ -89,7 +93,7 @@ struct sysentvec elf32_freebsd_sysvec = {
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.sv_errtbl = NULL,
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.sv_transtrap = NULL,
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.sv_fixup = __elfN(freebsd_fixup),
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs),
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.sv_sendsig = sendsig,
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.sv_sigcode = sigcode32,
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.sv_szsigcode = &szsigcode32,
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@ -38,6 +38,8 @@
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#include <sys/fcntl.h>
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#include <sys/sysent.h>
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#include <sys/imgact_elf.h>
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#include <sys/jail.h>
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#include <sys/smp.h>
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#include <sys/syscall.h>
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#include <sys/signalvar.h>
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#include <sys/vnode.h>
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@ -52,6 +54,8 @@
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#include <machine/elf.h>
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#include <machine/md_var.h>
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#include <powerpc/powerpc/elf_common.c>
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static void exec_setregs_funcdesc(struct thread *td, struct image_params *imgp,
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uintptr_t stack);
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@ -74,7 +78,7 @@ struct sysentvec elf64_freebsd_sysvec_v1 = {
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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.sv_setregs = exec_setregs_funcdesc,
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.sv_fixlimit = NULL,
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@ -112,7 +116,7 @@ struct sysentvec elf64_freebsd_sysvec_v2 = {
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.sv_usrstack = USRSTACK,
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.sv_psstrings = PS_STRINGS,
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.sv_stackprot = VM_PROT_ALL,
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.sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs),
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.sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs),
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.sv_copyout_strings = exec_copyout_strings,
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.sv_setregs = exec_setregs,
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.sv_fixlimit = NULL,
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89
sys/powerpc/powerpc/elf_common.c
Normal file
89
sys/powerpc/powerpc/elf_common.c
Normal file
@ -0,0 +1,89 @@
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2019 Justin Hibbits
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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static int
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__elfN(powerpc_copyout_auxargs)(struct image_params *imgp, uintptr_t base)
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{
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Elf_Auxargs *args;
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Elf_Auxinfo *argarray, *pos;
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int error;
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if (imgp->proc->p_osrel >= P_OSREL_POWERPC_NEW_AUX_ARGS)
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return (__elfN(freebsd_copyout_auxargs)(imgp, base));
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args = (Elf_Auxargs *)imgp->auxargs;
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argarray = pos = malloc(AT_OLD_COUNT * sizeof(*pos), M_TEMP,
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M_WAITOK | M_ZERO);
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if (args->execfd != -1)
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AUXARGS_ENTRY(pos, AT_OLD_EXECFD, args->execfd);
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AUXARGS_ENTRY(pos, AT_OLD_PHDR, args->phdr);
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AUXARGS_ENTRY(pos, AT_OLD_PHENT, args->phent);
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AUXARGS_ENTRY(pos, AT_OLD_PHNUM, args->phnum);
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AUXARGS_ENTRY(pos, AT_OLD_PAGESZ, args->pagesz);
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AUXARGS_ENTRY(pos, AT_OLD_FLAGS, args->flags);
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AUXARGS_ENTRY(pos, AT_OLD_ENTRY, args->entry);
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AUXARGS_ENTRY(pos, AT_OLD_BASE, args->base);
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AUXARGS_ENTRY(pos, AT_OLD_EHDRFLAGS, args->hdr_eflags);
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if (imgp->execpathp != 0)
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AUXARGS_ENTRY(pos, AT_OLD_EXECPATH, imgp->execpathp);
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AUXARGS_ENTRY(pos, AT_OLD_OSRELDATE,
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imgp->proc->p_ucred->cr_prison->pr_osreldate);
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if (imgp->canary != 0) {
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AUXARGS_ENTRY(pos, AT_OLD_CANARY, imgp->canary);
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AUXARGS_ENTRY(pos, AT_OLD_CANARYLEN, imgp->canarylen);
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}
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AUXARGS_ENTRY(pos, AT_OLD_NCPUS, mp_ncpus);
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if (imgp->pagesizes != 0) {
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AUXARGS_ENTRY(pos, AT_OLD_PAGESIZES, imgp->pagesizes);
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AUXARGS_ENTRY(pos, AT_OLD_PAGESIZESLEN, imgp->pagesizeslen);
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}
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if (imgp->sysent->sv_timekeep_base != 0) {
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AUXARGS_ENTRY(pos, AT_OLD_TIMEKEEP,
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imgp->sysent->sv_timekeep_base);
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}
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AUXARGS_ENTRY(pos, AT_OLD_STACKPROT, imgp->sysent->sv_shared_page_obj
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!= NULL && imgp->stack_prot != 0 ? imgp->stack_prot :
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imgp->sysent->sv_stackprot);
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if (imgp->sysent->sv_hwcap != NULL)
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AUXARGS_ENTRY(pos, AT_OLD_HWCAP, *imgp->sysent->sv_hwcap);
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if (imgp->sysent->sv_hwcap2 != NULL)
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AUXARGS_ENTRY(pos, AT_OLD_HWCAP2, *imgp->sysent->sv_hwcap2);
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AUXARGS_ENTRY(pos, AT_OLD_NULL, 0);
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free(imgp->auxargs, M_TEMP);
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imgp->auxargs = NULL;
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KASSERT(pos - argarray <= AT_OLD_COUNT, ("Too many auxargs"));
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error = copyout(argarray, (void *)base, sizeof(*argarray) * AT_OLD_COUNT);
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free(argarray, M_TEMP);
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return (error);
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}
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