starting 'kexec -l /dev/mmcblk0p1' fails since the size of a block device can not be determined with stat
Signed-off-by: Andreas Fenkart <[email protected]> --- kexec/kexec.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kexec/kexec.c b/kexec/kexec.c index ff024f3..8b8846e 100644 --- a/kexec/kexec.c +++ b/kexec/kexec.c @@ -26,7 +26,9 @@ #include <stdlib.h> #include <errno.h> #include <limits.h> +#include <sys/ioctl.h> #include <sys/mman.h> +#include <sys/mount.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/reboot.h> @@ -554,6 +556,14 @@ char *slurp_file(const char *filename, off_t *r_size) die("Can not seek to the begin of file %s: %s\n", filename, strerror(errno)); buf = slurp_fd(fd, filename, size, &nread); + } else if (S_ISBLK(stats.st_mode)) { + /* taken from blockdev */ + unsigned long long llu = -1; + err = ioctl(fd, BLKGETSIZE64, &llu); + if (err < 0) + die("Can't retrieve size of block device %s: %s\n", + filename, strerror(errno)); + size = llu; } else { size = nread = stats.st_size; buf = mmap(NULL, size, -- 2.5.1 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
