diff options
| author | jake <jake@FreeBSD.org> | 2000-11-22 07:42:04 +0000 |
|---|---|---|
| committer | jake <jake@FreeBSD.org> | 2000-11-22 07:42:04 +0000 |
| commit | 0c0be4e82677a2d8fb49b7a70676bf359e7360b0 (patch) | |
| tree | a0c32260edfde6d861e66b11172147608684043e /sys/kern/vfs_syscalls.c | |
| parent | 1b544875743d53491a096b0c757bf30ce73bb83b (diff) | |
| download | FreeBSD-src-0c0be4e82677a2d8fb49b7a70676bf359e7360b0.zip FreeBSD-src-0c0be4e82677a2d8fb49b7a70676bf359e7360b0.tar.gz | |
Protect the following with a lockmgr lock:
allproc
zombproc
pidhashtbl
proc.p_list
proc.p_hash
nextpid
Reviewed by: jhb
Obtained from: BSD/OS and netbsd
Diffstat (limited to 'sys/kern/vfs_syscalls.c')
| -rw-r--r-- | sys/kern/vfs_syscalls.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 7cf4663..59aacb5 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -366,6 +366,7 @@ checkdirs(olddp) return; if (VFS_ROOT(olddp->v_mountedhere, &newdp)) panic("mount: lost mount"); + lockmgr(&allproc_lock, LK_SHARED, NULL, CURPROC); LIST_FOREACH(p, &allproc, p_list) { fdp = p->p_fd; if (fdp->fd_cdir == olddp) { @@ -379,6 +380,7 @@ checkdirs(olddp) fdp->fd_rdir = newdp; } } + lockmgr(&allproc_lock, LK_RELEASE, NULL, CURPROC); if (rootvnode == olddp) { vrele(rootvnode); VREF(newdp); |
