ChangeSet 1.2231.1.141, 2005/03/28 19:55:43-08:00, [EMAIL PROTECTED]
[PATCH] fix mmap() return value to conform POSIX
This patch fixes 2 return values in mmap() to conform POSIX spec:
[EINVAL]
The value of len is zero.
[ENOMEM]
MAP_FIXED was specified, and the range [addr,addr+len) exceeds
that allowed for the address space of a process; or, if
MAP_FIXED was not specified and there is insufficient room in
the address space to effect the mapping.
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
mmap.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -Nru a/mm/mmap.c b/mm/mmap.c
--- a/mm/mmap.c 2005-03-28 21:37:32 -08:00
+++ b/mm/mmap.c 2005-03-28 21:37:32 -08:00
@@ -896,12 +896,12 @@
prot |= PROT_EXEC;
if (!len)
- return addr;
+ return -EINVAL;
/* Careful about overflows.. */
len = PAGE_ALIGN(len);
if (!len || len > TASK_SIZE)
- return -EINVAL;
+ return -ENOMEM;
/* offset overflow? */
if ((pgoff + (len >> PAGE_SHIFT)) < pgoff)
-
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