diff options
| author |   Mark Salyzyn <salyzyn@android.com> | 2015-01-16 16:01:10 -0800 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2015-01-16 16:01:10 -0800 |
| commit | 9d5438f462abd6398cdb7b3211bdcec271873a3b (patch) | |
| tree | feb8e50edd4180710602c0f4d2db9d76559da1f8 /fs/pstore/internal.h | |
| parent | pstore: Handle zero-sized prz in series (diff) | |
| download | linux-dev-9d5438f462abd6398cdb7b3211bdcec271873a3b.tar.xz linux-dev-9d5438f462abd6398cdb7b3211bdcec271873a3b.zip | |
pstore: Add pmsg - user-space accessible pstore object
A secured user-space accessible pstore object. Writes
to /dev/pmsg0 are appended to the buffer, on reboot
the persistent contents are available in
/sys/fs/pstore/pmsg-ramoops-[ID].
One possible use is syslogd, or other daemon, can
write messages, then on reboot provides a means to
triage user-space activities leading up to a panic
as a companion to the pstore dmesg or console logs.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/pstore/internal.h')
| -rw-r--r-- | fs/pstore/internal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h index 3b3d305277c4..c36ba2cd0b5d 100644 --- a/fs/pstore/internal.h +++ b/fs/pstore/internal.h @@ -45,6 +45,12 @@ extern void pstore_register_ftrace(void); static inline void pstore_register_ftrace(void) {} #endif +#ifdef CONFIG_PSTORE_PMSG +extern void pstore_register_pmsg(void); +#else +static inline void pstore_register_pmsg(void) {} +#endif + extern struct pstore_info *psinfo; extern void pstore_set_kmsg_bytes(int); |