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| 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/kern_ktrace.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/kern_ktrace.c')
| -rw-r--r-- | sys/kern/kern_ktrace.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c index 7d2e75a..2d3b08d 100644 --- a/sys/kern/kern_ktrace.c +++ b/sys/kern/kern_ktrace.c @@ -278,6 +278,7 @@ ktrace(curp, uap) * Clear all uses of the tracefile */ if (ops == KTROP_CLEARFILE) { + lockmgr(&allproc_lock, LK_SHARED, NULL, CURPROC); LIST_FOREACH(p, &allproc, p_list) { if (p->p_tracep == vp) { if (ktrcanset(curp, p)) { @@ -289,6 +290,7 @@ ktrace(curp, uap) error = EPERM; } } + lockmgr(&allproc_lock, LK_RELEASE, NULL, CURPROC); goto done; } /* @@ -494,6 +496,7 @@ ktrwrite(vp, kth, uio) */ log(LOG_NOTICE, "ktrace write failed, errno %d, tracing stopped\n", error); + lockmgr(&allproc_lock, LK_SHARED, NULL, CURPROC); LIST_FOREACH(p, &allproc, p_list) { if (p->p_tracep == vp) { p->p_tracep = NULL; @@ -501,6 +504,7 @@ ktrwrite(vp, kth, uio) vrele(vp); } } + lockmgr(&allproc_lock, LK_RELEASE, NULL, CURPROC); } /* |
