diff options
| author | Mark Salyzyn <salyzyn@android.com> | 2015-01-17 03:01:10 +0300 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2015-01-17 03:01:10 +0300 |
| commit | 9d5438f462abd6398cdb7b3211bdcec271873a3b (patch) | |
| tree | feb8e50edd4180710602c0f4d2db9d76559da1f8 /fs/pstore/inode.c | |
| parent | f44f96528a8cd4134a4f2c1a9d8c785600aa4888 (diff) | |
| download | linux-9d5438f462abd6398cdb7b3211bdcec271873a3b.tar.xz | |
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/inode.c')
| -rw-r--r-- | fs/pstore/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index d69586f09ffd..b32ce53d24ee 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -361,6 +361,9 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id, int count, scnprintf(name, sizeof(name), "powerpc-common-%s-%lld", psname, id); break; + case PSTORE_TYPE_PMSG: + scnprintf(name, sizeof(name), "pmsg-%s-%lld", psname, id); + break; case PSTORE_TYPE_UNKNOWN: scnprintf(name, sizeof(name), "unknown-%s-%lld", psname, id); break; |