diff options
| -rw-r--r-- | drivers/md/md.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 07f180f95b4..c1613854f38 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1525,6 +1525,26 @@ repeat: } +/* words written to sysfs files may, or my not, be \n terminated. + * We want to accept with case. For this we use cmd_match. + */ +static int cmd_match(const char *cmd, const char *str) +{ + /* See if cmd, written into a sysfs file, matches + * str. They must either be the same, or cmd can + * have a trailing newline + */ + while (*cmd && *str && *cmd == *str) { + cmd++; + str++; + } + if (*cmd == '\n') + cmd++; + if (*str || *cmd) + return 0; + return 1; +} + struct rdev_sysfs_entry { struct attribute attr; ssize_t (*show)(mdk_rdev_t *, char *); @@ -1799,7 +1819,7 @@ action_store(mddev_t *mddev, const char *page, size_t len) if (!mddev->pers || !mddev->pers->sync_request) return -EINVAL; - if (strcmp(page, "idle")==0 || strcmp(page, "idle\n")==0) { + if (cmd_match(page, "idle")) { if (mddev->sync_thread) { set_bit(MD_RECOVERY_INTR, &mddev->recovery); md_unregister_thread(mddev->sync_thread); @@ -1812,13 +1832,12 @@ action_store(mddev_t *mddev, const char *page, size_t len) if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) || test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) return -EBUSY; - if (strcmp(page, "resync")==0 || strcmp(page, "resync\n")==0 || - strcmp(page, "recover")==0 || strcmp(page, "recover\n")==0) + if (cmd_match(page, "resync") || cmd_match(page, "recover")) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); else { - if (strcmp(page, "check")==0 || strcmp(page, "check\n")==0) + if (cmd_match(page, "check")) set_bit(MD_RECOVERY_CHECK, &mddev->recovery); - else if (strcmp(page, "repair")!=0 && strcmp(page, "repair\n")!=0) + else if (cmd_match(page, "repair")) return -EINVAL; set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery); set_bit(MD_RECOVERY_SYNC, &mddev->recovery); |