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author | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:01:26 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:01:26 +0200 |
commit | 032f82786f9be4635acaa5f77feca175a4ac5fe1 (patch) | |
tree | 11ce43c1086d3dec43c92b0a2cc740240b338fb7 /fs/libfs.c | |
parent | 46ac22bab42cc868b9c1d0e915ddbc8e8065a44d (diff) | |
parent | b7279469d66b55119784b8b9529c99c1955fe747 (diff) | |
download | linux-032f82786f9be4635acaa5f77feca175a4ac5fe1.tar.gz linux-032f82786f9be4635acaa5f77feca175a4ac5fe1.tar.bz2 linux-032f82786f9be4635acaa5f77feca175a4ac5fe1.zip |
Merge commit 'v2.6.26-rc9' into sched/devel
Diffstat (limited to 'fs/libfs.c')
-rw-r--r-- | fs/libfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 892d41cb3382..baeb71ee1cde 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -512,6 +512,20 @@ void simple_release_fs(struct vfsmount **mount, int *count) mntput(mnt); } +/** + * simple_read_from_buffer - copy data from the buffer to user space + * @to: the user space buffer to read to + * @count: the maximum number of bytes to read + * @ppos: the current position in the buffer + * @from: the buffer to read from + * @available: the size of the buffer + * + * The simple_read_from_buffer() function reads up to @count bytes from the + * buffer @from at offset @ppos into the user space address starting at @to. + * + * On success, the number of bytes read is returned and the offset @ppos is + * advanced by this number, or negative value is returned on error. + **/ ssize_t simple_read_from_buffer(void __user *to, size_t count, loff_t *ppos, const void *from, size_t available) { @@ -528,6 +542,20 @@ ssize_t simple_read_from_buffer(void __user *to, size_t count, loff_t *ppos, return count; } +/** + * memory_read_from_buffer - copy data from the buffer + * @to: the kernel space buffer to read to + * @count: the maximum number of bytes to read + * @ppos: the current position in the buffer + * @from: the buffer to read from + * @available: the size of the buffer + * + * The memory_read_from_buffer() function reads up to @count bytes from the + * buffer @from at offset @ppos into the kernel space address starting at @to. + * + * On success, the number of bytes read is returned and the offset @ppos is + * advanced by this number, or negative value is returned on error. + **/ ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, const void *from, size_t available) { |