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| author | Alex Kelly <alex.page.kelly@gmail.com> | 2012-10-04 17:15:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:05:15 +0900 |
| commit | 046d662f481830e652ac34cd112249adde16452a (patch) | |
| tree | ad13e968b4b02f9e2c35ce45f358477474df80d7 /include/linux/binfmts.h | |
| parent | db9aeca97a58563e1ab927d157c9b5048f233e73 (diff) | |
| download | lwn-046d662f481830e652ac34cd112249adde16452a.tar.gz lwn-046d662f481830e652ac34cd112249adde16452a.zip | |
coredump: make core dump functionality optional
Adds an expert Kconfig option, CONFIG_COREDUMP, which allows disabling of
core dump. This saves approximately 2.6k in the compiled kernel, and
complements CONFIG_ELF_CORE, which now depends on it.
CONFIG_COREDUMP also disables coredump-related sysctls, except for
suid_dumpable and related functions, which are necessary for ptrace.
[akpm@linux-foundation.org: fix binfmt_aout.c build]
Signed-off-by: Alex Kelly <alex.page.kelly@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/binfmts.h')
| -rw-r--r-- | include/linux/binfmts.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 366422bc1633..00e2e8908953 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -132,7 +132,11 @@ extern int copy_strings_kernel(int argc, const char *const *argv, struct linux_binprm *bprm); extern int prepare_bprm_creds(struct linux_binprm *bprm); extern void install_exec_creds(struct linux_binprm *bprm); +#ifdef CONFIG_COREDUMP extern void do_coredump(long signr, int exit_code, struct pt_regs *regs); +#else +static inline void do_coredump(long signr, int exit_code, struct pt_regs *regs) {} +#endif extern void set_binfmt(struct linux_binfmt *new); extern void free_bprm(struct linux_binprm *); |