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| author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2005-06-06 14:46:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-06 14:57:51 -0700 |
| commit | 8f5bb0438b86d1a5393176ceeec2836fd469edf8 (patch) | |
| tree | 7b47dcf5d182cc3465cac1c904bdc3aec6e7e8f2 /fs/binfmt_flat.c | |
| parent | d671a1cbf7c7a5c5562106d39eb7f830ae5273ae (diff) | |
| download | lwn-8f5bb0438b86d1a5393176ceeec2836fd469edf8.tar.gz lwn-8f5bb0438b86d1a5393176ceeec2836fd469edf8.zip | |
[PATCH] binfmt_flat mmap flag fix
Make sure that binfmt_flat passes the correct flags into do_mmap(). nommu's
validate_mmap_request() will simple return -EINVAL if we try and pass it a
flags value of zero.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/binfmt_flat.c')
| -rw-r--r-- | fs/binfmt_flat.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c index f0cd67d9d31b..c8998dc66882 100644 --- a/fs/binfmt_flat.c +++ b/fs/binfmt_flat.c @@ -520,7 +520,7 @@ static int load_flat_file(struct linux_binprm * bprm, DBG_FLT("BINFMT_FLAT: ROM mapping of file (we hope)\n"); down_write(¤t->mm->mmap_sem); - textpos = do_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, 0, 0); + textpos = do_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, MAP_SHARED, 0); up_write(¤t->mm->mmap_sem); if (!textpos || textpos >= (unsigned long) -4096) { if (!textpos) @@ -532,7 +532,7 @@ static int load_flat_file(struct linux_binprm * bprm, down_write(¤t->mm->mmap_sem); realdatastart = do_mmap(0, 0, data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long), - PROT_READ|PROT_WRITE|PROT_EXEC, 0, 0); + PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0); up_write(¤t->mm->mmap_sem); if (realdatastart == 0 || realdatastart >= (unsigned long)-4096) { @@ -574,7 +574,7 @@ static int load_flat_file(struct linux_binprm * bprm, down_write(¤t->mm->mmap_sem); textpos = do_mmap(0, 0, text_len + data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long), - PROT_READ | PROT_EXEC | PROT_WRITE, 0, 0); + PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0); up_write(¤t->mm->mmap_sem); if (!textpos || textpos >= (unsigned long) -4096) { if (!textpos) |