diff options
| author | jhb <jhb@FreeBSD.org> | 2002-04-11 21:00:38 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2002-04-11 21:00:38 +0000 |
| commit | afc32a4ae3be31bf9b667ece0044d8657566abfd (patch) | |
| tree | e53fd9bece7d8a057640a4490c89766bd146777a /sys | |
| parent | b129a4a7ca85e377255fb9c2b89490d5059f4f5d (diff) | |
| download | FreeBSD-src-afc32a4ae3be31bf9b667ece0044d8657566abfd.zip FreeBSD-src-afc32a4ae3be31bf9b667ece0044d8657566abfd.tar.gz | |
Use proc lock to protect p_ucred pointer while we deference it to read a
few values.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/compat/svr4/svr4_sysvec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/compat/svr4/svr4_sysvec.c b/sys/compat/svr4/svr4_sysvec.c index 5292a8c..b6d1e2c 100644 --- a/sys/compat/svr4/svr4_sysvec.c +++ b/sys/compat/svr4/svr4_sysvec.c @@ -44,7 +44,9 @@ #include <sys/imgact.h> #include <sys/imgact_elf.h> #include <sys/socket.h> +#include <sys/lock.h> #include <sys/malloc.h> +#include <sys/mutex.h> #include <sys/namei.h> #include <sys/vnode.h> #include <sys/module.h> @@ -213,10 +215,12 @@ svr4_fixup(register_t **stack_base, struct image_params *imgp) AUXARGS_ENTRY(pos, AT_FLAGS, args->flags); AUXARGS_ENTRY(pos, AT_ENTRY, args->entry); AUXARGS_ENTRY(pos, AT_BASE, args->base); + PROC_LOCK(imgp->proc); AUXARGS_ENTRY(pos, AT_UID, imgp->proc->p_ucred->cr_ruid); AUXARGS_ENTRY(pos, AT_EUID, imgp->proc->p_ucred->cr_svuid); AUXARGS_ENTRY(pos, AT_GID, imgp->proc->p_ucred->cr_rgid); AUXARGS_ENTRY(pos, AT_EGID, imgp->proc->p_ucred->cr_svgid); + PROC_UNLOCK(imgp->proc); AUXARGS_ENTRY(pos, AT_NULL, 0); free(imgp->auxargs, M_TEMP); |
