Add file_name_detect_type_offset to allow file system detection for loop mounts at an offset. Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> --- common/filetype.c | 10 ++++++++-- include/filetype.h | 1 + 2 files changed, 9 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; diff --git a/include/filetype.h b/include/filetype.h index b98dcb5014..ec5aea2635 100644 --- a/include/filetype.h +++ b/include/filetype.h @@ -50,6 +50,7 @@ const char *file_type_to_short_string(enum filetype f); enum filetype file_detect_partition_table(const void *_buf, size_t bufsize); enum filetype file_detect_type(const void *_buf, size_t bufsize); enum filetype file_name_detect_type(const char *filename); +enum filetype file_name_detect_type_offset(const char *filename, loff_t pos); enum filetype cdev_detect_type(const char *name); enum filetype is_fat_or_mbr(const unsigned char *sector, unsigned long *bootsec); int is_fat_boot_sector(const void *_buf); -- 2.15.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox