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[PATCH] uml: tidying COW code 

Improve (especially for coherence) some prototypes, and return code of
init_cow_file in error case - for a short write return -EINVAL, otherwise
return the error we got!

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2006-02-24 13:03:58 -08:00 committed by Linus Torvalds
parent f462e8f913
commit fe1db50c72
4 changed files with 6 additions and 5 deletions
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2
arch/um/drivers/cow.h
View File

@ -46,7 +46,7 @@ extern int file_reader(__u64 offset, char *buf, int len, void *arg);
extern int read_cow_header(int (*reader)(__u64, char *, int, void *),
void *arg, __u32 *version_out,
char **backing_file_out, time_t *mtime_out,
unsigned long long *size_out, int *sectorsize_out,
__u64 *size_out, int *sectorsize_out,
__u32 *align_out, int *bitmap_offset_out);
extern int write_cow_header(char *cow_file, int fd, char *backing_file,

4
arch/um/drivers/cow_sys.h
View File

@ -23,12 +23,12 @@ static inline char *cow_strdup(char *str)
return(uml_strdup(str));
}
static inline int cow_seek_file(int fd, unsigned long long offset)
static inline int cow_seek_file(int fd, __u64 offset)
{
return(os_seek_file(fd, offset));
}
static inline int cow_file_size(char *file, unsigned long long *size_out)
static inline int cow_file_size(char *file, __u64 *size_out)
{
return(os_file_size(file, size_out));
}

3
arch/um/drivers/cow_user.c
View File

@ -362,7 +362,8 @@ int init_cow_file(int fd, char *cow_file, char *backing_file, int sectorsize,
if(err != sizeof(zero)){
cow_printf("Write of bitmap to new COW file '%s' failed, "
"err = %d\n", cow_file, -err);
err = -EINVAL;
if (err >= 0)
err = -EINVAL;
goto out;
}

2
arch/um/drivers/ubd_kern.c
View File

@ -1135,7 +1135,7 @@ static int path_requires_switch(char *from_cmdline, char *from_cow, char *cow)
static int backing_file_mismatch(char *file, __u64 size, time_t mtime)
{
unsigned long modtime;
long long actual;
unsigned long long actual;
int err;
err = os_file_modtime(file, &modtime);