diff options
| author | Karel Zak | 2009-03-12 14:31:50 +0100 |
|---|---|---|
| committer | Karel Zak | 2009-03-12 14:31:50 +0100 |
| commit | dfbc185e532bf2e2dc192081d6fddd0b58f9089e (patch) | |
| tree | 12e1866a8871a113ffc5273fb0cfec4ea802f95e /lib | |
| parent | lib: pttype - extend the API to work with file descriptors (diff) | |
| download | kernel-qcow2-util-linux-dfbc185e532bf2e2dc192081d6fddd0b58f9089e.tar.gz kernel-qcow2-util-linux-dfbc185e532bf2e2dc192081d6fddd0b58f9089e.tar.xz kernel-qcow2-util-linux-dfbc185e532bf2e2dc192081d6fddd0b58f9089e.zip | |
lib: wholedisk - extend API, add test program
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/.gitignore | 4 | ||||
| -rw-r--r-- | lib/Makefile.am | 9 | ||||
| -rw-r--r-- | lib/wholedisk.c | 43 |
3 files changed, 40 insertions, 16 deletions
diff --git a/lib/.gitignore b/lib/.gitignore index 0be0fd86c..145f5d746 100644 --- a/lib/.gitignore +++ b/lib/.gitignore @@ -1,3 +1 @@ -test_blkdev -test_ismounted -test_pttype +test_* diff --git a/lib/Makefile.am b/lib/Makefile.am index f813f6855..0b6480699 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -1,16 +1,15 @@ include $(top_srcdir)/config/include-Makefile.am -noinst_PROGRAMS = test_blkdev test_ismounted test_pttype +AM_CPPFLAGS += -DTEST_PROGRAM + +noinst_PROGRAMS = test_blkdev test_ismounted test_pttype test_wholedisk test_blkdev_SOURCES = blkdev.c test_ismounted_SOURCES = ismounted.c test_pttype_SOURCES = pttype.c +test_wholedisk_SOURCES = wholedisk.c if LINUX test_blkdev_SOURCES += linux_version.c endif -test_blkdev_CFLAGS = -DTEST_PROGRAM -test_ismounted_CFLAGS = -DTEST_PROGRAM -test_pttype_CFLAGS = -DTEST_PROGRAM - diff --git a/lib/wholedisk.c b/lib/wholedisk.c index eb6d432ce..35f143d28 100644 --- a/lib/wholedisk.c +++ b/lib/wholedisk.c @@ -1,22 +1,21 @@ +#include <stdio.h> +#include <stdlib.h> #include <ctype.h> #include "blkdev.h" #include "wholedisk.h" -int is_whole_disk(const char *name) +int is_whole_disk_fd(int fd, const char *name) { #ifdef HDIO_GETGEO struct hd_geometry geometry; - int fd, i = 0; + int i = 0; - fd = open(name, O_RDONLY); - if (fd >= 0) { + if (fd != -1) i = ioctl(fd, HDIO_GETGEO, &geometry); - close(fd); - } - if (i==0) - return (fd >= 0 && geometry.start == 0); + if (i == 0) + return geometry.start == 0; #endif /* * The "silly heuristic" is still sexy for us, because @@ -29,3 +28,31 @@ int is_whole_disk(const char *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 <device>\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 |