From 119147ebfd2827558b6d27e525c2d8da6bf2865a Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 1 Feb 2018 11:37:16 +0100 Subject: 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 Signed-off-by: Sascha Hauer --- common/filetype.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'common') 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 #include #include +#include #include #include #include @@ -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; -- cgit v1.2.3