From e60683a0d553b6488c564863f4e48954944fb0f8 Mon Sep 17 00:00:00 2001 From: bigbiff bigbiff Date: Fri, 22 Feb 2013 20:55:50 -0500 Subject: use libblkid to get filesystem type we can now use libblkid to detect exfat --- libblkid/wholedisk.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 libblkid/wholedisk.c (limited to 'libblkid/wholedisk.c') diff --git a/libblkid/wholedisk.c b/libblkid/wholedisk.c new file mode 100644 index 000000000..1dbb90c5c --- /dev/null +++ b/libblkid/wholedisk.c @@ -0,0 +1,62 @@ +/* + * No copyright is claimed. This code is in the public domain; do with + * it what you wish. + * + * Written by Karel Zak + */ +#include +#include +#include + +#include "blkdev.h" +#include "wholedisk.h" + +int is_whole_disk_fd(int fd, const char *name) +{ +#ifdef HDIO_GETGEO + if (fd != -1) { + struct hd_geometry geometry; + int i = ioctl(fd, HDIO_GETGEO, &geometry); + if (i == 0) + return geometry.start == 0; + } +#endif + /* + * The "silly heuristic" is still sexy for us, because + * for example Xen doesn't implement HDIO_GETGEO for virtual + * block devices (/dev/xvda). + * + * -- kzak@redhat.com (23-Feb-2006) + */ + while (*name) + name++; + return !isdigit(name[-1]); +} + +int is_whole_disk(const char *name) +{ + int fd = -1, res = 0; +#ifdef HDIO_GETGEO + fd = open(name, O_RDONLY); + if (fd != -1) +#endif + res = is_whole_disk_fd(fd, name); + + if (fd != -1) + close(fd); + return res; +} + +#ifdef TEST_PROGRAM +int main(int argc, char **argv) +{ + if (argc < 2) { + fprintf(stderr, "usage: %s \n", argv[0]); + exit(EXIT_FAILURE); + } + + printf("%s: is%s whole disk\n", argv[1], + is_whole_disk(argv[1]) ? "" : " NOT"); + exit(EXIT_SUCCESS); +} +#endif -- cgit v1.2.3