diff options
| author | Michal Suchanek <msuchanek@suse.de> | 2017-06-26 16:06:01 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-11-13 10:51:38 +1100 |
| commit | dcdc46794b7bb76733d9792cca2f45871d66881f (patch) | |
| tree | 47a3ff135729e8fe4fc2ec5f1eeb09528d35db6d /arch/powerpc | |
| parent | 6c44741d75a27985a0496cd58b123a58c7177108 (diff) | |
powerpc/fadump: use kstrtoint to handle sysfs store
Currently sysfs store handlers in fadump use if buf[0] == 'char'.
This means input "100foo" is interpreted as '1' and "01" as '0'.
Change to kstrtoint so leading zeroes and the like is handled in
expected way.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Acked-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Signed-off-by: Michal Suchanek <a class="moz-txt-link-rfc2396E" href="mailto:msuchanek@suse.de"><msuchanek@suse.de></a></pre>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/fadump.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index e1431800bfb9..04ea5c04fd24 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -1270,10 +1270,15 @@ static ssize_t fadump_release_memory_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { + int input = -1; + if (!fw_dump.dump_active) return -EPERM; - if (buf[0] == '1') { + if (kstrtoint(buf, 0, &input)) + return -EINVAL; + + if (input == 1) { /* * Take away the '/proc/vmcore'. We are releasing the dump * memory, hence it will not be valid anymore. @@ -1307,21 +1312,25 @@ static ssize_t fadump_register_store(struct kobject *kobj, const char *buf, size_t count) { int ret = 0; + int input = -1; if (!fw_dump.fadump_enabled || fdm_active) return -EPERM; + if (kstrtoint(buf, 0, &input)) + return -EINVAL; + mutex_lock(&fadump_mutex); - switch (buf[0]) { - case '0': + switch (input) { + case 0: if (fw_dump.dump_registered == 0) { goto unlock_out; } /* Un-register Firmware-assisted dump */ fadump_unregister_dump(&fdm); break; - case '1': + case 1: if (fw_dump.dump_registered == 1) { ret = -EEXIST; goto unlock_out; |