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| author | jhb <jhb@FreeBSD.org> | 2001-01-24 00:27:28 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-01-24 00:27:28 +0000 |
| commit | a294d4e362c79943729544b2c37f98be3a6f0dac (patch) | |
| tree | 8794f893081a4e5c2206a94c71a5af5f035f04b7 /sys/kern/imgact_aout.c | |
| parent | f540aca98452ae3328bb85b3019b403196f8d16d (diff) | |
| download | FreeBSD-src-a294d4e362c79943729544b2c37f98be3a6f0dac.zip FreeBSD-src-a294d4e362c79943729544b2c37f98be3a6f0dac.tar.gz | |
Proc locking.
Diffstat (limited to 'sys/kern/imgact_aout.c')
| -rw-r--r-- | sys/kern/imgact_aout.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/kern/imgact_aout.c b/sys/kern/imgact_aout.c index 6e0edde..ff315f5 100644 --- a/sys/kern/imgact_aout.c +++ b/sys/kern/imgact_aout.c @@ -155,6 +155,7 @@ exec_aout_imgact(imgp) /* * text/data/bss must not exceed limits */ + mtx_assert(&Giant, MA_OWNED); if (/* text can't exceed maximum text size */ a_out->a_text > MAXTSIZ || @@ -248,13 +249,17 @@ aout_coredump(p, vp, limit) register struct vnode *vp; off_t limit; { - register struct ucred *cred = p->p_ucred; + register struct ucred *cred; register struct vmspace *vm = p->p_vmspace; int error; if (ctob(UPAGES + vm->vm_dsize + vm->vm_ssize) >= limit) return (EFAULT); fill_kinfo_proc(p, &p->p_addr->u_kproc); + PROC_LOCK(p); + cred = p->p_ucred; + crhold(cred); + PROC_UNLOCK(p); error = cpu_coredump(p, vp, cred); if (error == 0) error = vn_rdwr(UIO_WRITE, vp, vm->vm_daddr, @@ -266,6 +271,7 @@ aout_coredump(p, vp, limit) round_page(ctob(vm->vm_ssize)), (off_t)ctob(UPAGES) + ctob(vm->vm_dsize), UIO_USERSPACE, IO_NODELOCKED|IO_UNIT, cred, (int *) NULL, p); + crfree(cred); return (error); } |
