diff options
| author | Josef Bacik <josef@redhat.com> | 2011-07-18 19:21:39 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-21 02:47:58 +0200 |
| commit | 22735068d53c7115e384bc88dea95b17e76a6839 (patch) | |
| tree | c531b0ca2ccf472c8abfede626535fcf07357624 /drivers | |
| parent | fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek (diff) | |
| download | linux-22735068d53c7115e384bc88dea95b17e76a6839.tar.xz linux-22735068d53c7115e384bc88dea95b17e76a6839.zip | |
drivers: fix up various ->llseek() implementations
Fix up a few ->llseek() implementations that won't deal with SEEK_HOLE/SEEK_DATA
properly. Make them future proof so that if we ever add new options they will
return -EINVAL. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/generic_nvram.c | 4 | ||||
| -rw-r--r-- | drivers/char/nvram.c | 2 | ||||
| -rw-r--r-- | drivers/char/ps3flash.c | 4 | ||||
| -rw-r--r-- | drivers/macintosh/nvram.c | 4 |
4 files changed, 14 insertions, 0 deletions
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c index 0e941b57482e..6c4f4b5a9dd3 100644 --- a/drivers/char/generic_nvram.c +++ b/drivers/char/generic_nvram.c @@ -34,12 +34,16 @@ static ssize_t nvram_len; static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) { switch (origin) { + case 0: + break; case 1: offset += file->f_pos; break; case 2: offset += nvram_len; break; + default: + offset = -1; } if (offset < 0) return -EINVAL; diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c index 166f1e7aaa7e..da3cfee782dc 100644 --- a/drivers/char/nvram.c +++ b/drivers/char/nvram.c @@ -224,6 +224,8 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) case 2: offset += NVRAM_BYTES; break; + default: + return -EINVAL; } return (offset >= 0) ? (file->f_pos = offset) : -EINVAL; diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c index 85c004a518ee..5a06787e5be3 100644 --- a/drivers/char/ps3flash.c +++ b/drivers/char/ps3flash.c @@ -101,12 +101,16 @@ static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin) mutex_lock(&file->f_mapping->host->i_mutex); switch (origin) { + case 0: + break; case 1: offset += file->f_pos; break; case 2: offset += dev->regions[dev->region_idx].size*dev->blk_size; break; + default: + offset = -1; } if (offset < 0) { res = -EINVAL; diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c index a271c8218d82..f0e03e7937e3 100644 --- a/drivers/macintosh/nvram.c +++ b/drivers/macintosh/nvram.c @@ -21,12 +21,16 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) { switch (origin) { + case 0: + break; case 1: offset += file->f_pos; break; case 2: offset += NVRAM_SIZE; break; + default: + offset = -1; } if (offset < 0) return -EINVAL; |