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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2006-02-24 13:03:58 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-24 14:31:37 -0800
commitfe1db50c7222c67466e41241bc7ef17b469bcf1d (patch)
tree1956b61473d8e9cc8a1a0849e75a728b1395f902
parentf462e8f913bdc7a28ce55508d0c045a0c445b157 (diff)
downloadlinux-linaro-fe1db50c7222c67466e41241bc7ef17b469bcf1d.tar.gz
[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>
-rw-r--r--arch/um/drivers/cow.h2
-rw-r--r--arch/um/drivers/cow_sys.h4
-rw-r--r--arch/um/drivers/cow_user.c3
-rw-r--r--arch/um/drivers/ubd_kern.c2
4 files changed, 6 insertions, 5 deletions
diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h
index dc36b222100..04e3958266e 100644
--- a/arch/um/drivers/cow.h
+++ b/arch/um/drivers/cow.h
@@ -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,
diff --git a/arch/um/drivers/cow_sys.h b/arch/um/drivers/cow_sys.h
index df25263d2ad..94de4ead4f7 100644
--- a/arch/um/drivers/cow_sys.h
+++ b/arch/um/drivers/cow_sys.h
@@ -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));
}
diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c
index d1c86bc377b..61951b72126 100644
--- a/arch/um/drivers/cow_user.c
+++ b/arch/um/drivers/cow_user.c
@@ -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;
}
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 101efd26d46..fa617e0719a 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -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);