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>

diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 0e941b5..6c4f4b5 100644 (file)
--- 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 166f1e7..da3cfee 100644 (file)
--- 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 85c004a..5a06787 100644 (file)
--- 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 a271c82..f0e03e7 100644 (file)
--- 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;