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fs: API changes enabling extra parameter to return size of type loff_t

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The sandbox/ext4/fat/generic fs commands do not gracefully deal with files
greater than 2GB. Negative values are returned in such cases.

To handle this, the fs functions have been modified to take an additional
parameter of type "* loff_t" which is then populated. The return value
of the fs functions are used only for error conditions.

Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
[trini: Update board/gdsys/p1022/controlcenterd-id.c,
drivers/fpga/zynqpl.c for changes]
Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Suriyan Ramasami
2014-11-17 14:39:38 -08:00
committed by Tom Rini
parent 96b1046d1c
commit d455d8789d
11 changed files with 138 additions and 122 deletions
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23
fs/fat/fat.c
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@@ -1248,16 +1248,9 @@ int fat_exists(const char *filename)
return ret == 0;
}
int fat_size(const char *filename)
int fat_size(const char *filename, loff_t *size)
{
loff_t size;
int ret;
ret = do_fat_read_at(filename, 0, NULL, 0, LS_NO, 1, &size);
if (ret)
return ret;
else
return size;
return do_fat_read_at(filename, 0, NULL, 0, LS_NO, 1, size);
}
int file_fat_read_at(const char *filename, loff_t pos, void *buffer,
@@ -1280,18 +1273,16 @@ int file_fat_read(const char *filename, void *buffer, int maxsize)
return actread;
}
int fat_read_file(const char *filename, void *buf, int offset, int len)
int fat_read_file(const char *filename, void *buf, loff_t offset, loff_t len,
loff_t *actread)
{
int ret;
loff_t actread;
ret = file_fat_read_at(filename, offset, buf, len, &actread);
if (ret) {
ret = file_fat_read_at(filename, offset, buf, len, actread);
if (ret)
printf("** Unable to read file %s **\n", filename);
return ret;
}
return actread;
return ret;
}
void fat_close(void)