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author | Philipp Zabel <p.zabel@pengutronix.de> | 2018-02-01 11:37:16 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-02-05 08:26:22 +0100 |
commit | 119147ebfd2827558b6d27e525c2d8da6bf2865a (patch) | |
tree | b14c0062c78a231906e9795a8488a49967ee942e /common/filetype.c | |
parent | 9eb45f4f3c3f038abbd32890c9fa95a1ebb302cb (diff) | |
download | barebox-119147ebfd2827558b6d27e525c2d8da6bf2865a.tar.gz barebox-119147ebfd2827558b6d27e525c2d8da6bf2865a.tar.xz |
filetype: Add type detection at an offset
Add file_name_detect_type_offset to allow file system detection for loop
mounts at an offset.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/filetype.c')
-rw-r--r-- | common/filetype.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/common/filetype.c b/common/filetype.c index f9c034ff2a..71691fd813 100644 --- a/common/filetype.c +++ b/common/filetype.c @@ -21,6 +21,7 @@ #include <asm/unaligned.h> #include <fcntl.h> #include <fs.h> +#include <libfile.h> #include <malloc.h> #include <errno.h> #include <envfs.h> @@ -343,13 +344,13 @@ enum filetype file_detect_type(const void *_buf, size_t bufsize) return filetype_unknown; } -enum filetype file_name_detect_type(const char *filename) +enum filetype file_name_detect_type_offset(const char *filename, loff_t pos) { int fd, ret; void *buf; enum filetype type = filetype_unknown; - fd = open(filename, O_RDONLY); + fd = open_and_lseek(filename, O_RDONLY, pos); if (fd < 0) return fd; @@ -368,6 +369,11 @@ err_out: return type; } +enum filetype file_name_detect_type(const char *filename) +{ + return file_name_detect_type_offset(filename, 0); +} + enum filetype cdev_detect_type(const char *name) { enum filetype type = filetype_unknown; |