Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d98a690f58e0d6ecf424b7ca84488475cf87bd9
Commit: 8d98a690f58e0d6ecf424b7ca84488475cf87bd9
Parent: 7925409e202a41176b729671eab6e610a54153cd
Author: Rafael J. Wysocki <[EMAIL PROTECTED]>
AuthorDate: Wed May 16 22:11:19 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu May 17 05:23:05 2007 -0700
swsusp: fix sysfs interface
The sysfs files /sys/power/disk and /sys/power/state do not work as
documented, since they allow the user to write only a few initial
characters of the input string to trigger the option (eg. 'echo pl >
/sys/power/disk' activates the platform mode of hibernation). Fix it.
Special thanks to Peter Moulder <[EMAIL PROTECTED]> for
pointing out the problem.
Signed-off-by: Rafael J. Wysocki <[EMAIL PROTECTED]>
Acked-by: Pavel Machek <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
kernel/power/disk.c | 3 ++-
kernel/power/main.c | 4 ++--
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index b5f0543..f445b9c 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -416,7 +416,8 @@ static ssize_t disk_store(struct kset *kset, const char
*buf, size_t n)
mutex_lock(&pm_mutex);
for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) {
- if (!strncmp(buf, hibernation_modes[i], len)) {
+ if (len == strlen(hibernation_modes[i])
+ && !strncmp(buf, hibernation_modes[i], len)) {
mode = i;
break;
}
diff --git a/kernel/power/main.c b/kernel/power/main.c
index b98b80c..8812985 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -290,13 +290,13 @@ static ssize_t state_store(struct kset *kset, const char
*buf, size_t n)
len = p ? p - buf : n;
/* First, check if we are requested to hibernate */
- if (!strncmp(buf, "disk", len)) {
+ if (len == 4 && !strncmp(buf, "disk", len)) {
error = hibernate();
return error ? error : n;
}
for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++) {
- if (*s && !strncmp(buf, *s, len))
+ if (*s && len == strlen(*s) && !strncmp(buf, *s, len))
break;
}
if (state < PM_SUSPEND_MAX && *s)
-
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