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authorOllie Wild <aaw@google.com>2007-07-19 01:48:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 10:04:45 -0700
commitb6a2fea39318e43fee84fa7b0b90d68bed92d2ba (patch)
treec9c3619cb2730b5c10c7427b837146bce3d69156 /kernel
parentbdf4c48af20a3b0f01671799ace345e3d49576da (diff)
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mm: variable length argument support
Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from the old mm into the new mm. We create the new mm before the binfmt code runs, and place the new stack at the very top of the address space. Once the binfmt code runs and figures out where the stack should be, we move it downwards. It is a bit peculiar in that we have one task with two mm's, one of which is inactive. [a.p.zijlstra@chello.nl: limit stack size] Signed-off-by: Ollie Wild <aaw@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Cc: Hugh Dickins <hugh@veritas.com> [bunk@stusta.de: unexport bprm_mm_init] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/auditsc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 535586fc498..145cbb79c4b 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -843,7 +843,7 @@ static void audit_log_execve_info(struct audit_buffer *ab,
return; /* execve failed, no additional info */
for (i = 0; i < axi->argc; i++, p += len) {
- len = strnlen_user(p, MAX_ARG_PAGES*PAGE_SIZE);
+ len = strnlen_user(p, MAX_ARG_STRLEN);
/*
* We just created this mm, if we can't find the strings
* we just copied into it something is _very_ wrong. Similar