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makedevs: fix cases where (start != 0)

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The makedevs script did not always generate the requested set of device names / minor number series.
* If start != 0, then requesting (count) devices would generate only (count - start)
* If start != 0 && increment != 1, then requesting minors starting with (minor) would generate minors starting with (minor + (start * (increment - 1)))

This patch fixes the code and updates the usage text with extra examples.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Thomas De Schampheleire 2011-02-23 17:44:41 +01:00 committed by Peter Korsgaard
parent d17c165280
commit a85971a68b
2 changed files with 18 additions and 9 deletions
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9
CHANGES
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@ -10,10 +10,11 @@
enchant, fakeroot, gmpc, gpsd, gvfs, iperf, jpeg, libarchive,
libcgicc, libdaemon, libdrm, libevent, libgail, libglib2,
libgpg-error, libmicrohttpd, librsvg, libsoup, libxcp,
matchbox-fakekey, matchbox-startup-monitor, mdadm, metacity,
mpd, nasm, nfs-utils, olsr, popt, pthread-stubs, quagga, rpm,
samba, sdl, sdl_gfx, sdl_image, sdl_mixer, sdl_sound, sdl_ttf,
squashfs, taglib, tcpreplay, tiff, wpa_supplicant, xcb-util,
makedevs, matchbox-fakekey, matchbox-startup-monitor, mdadm,
metacity, mpd, nasm, nfs-utils, olsr, popt, pthread-stubs,
quagga, rpm, samba, sdl, sdl_gfx, sdl_image, sdl_mixer,
sdl_sound, sdl_ttf, squashfs, taglib, tcpreplay, tiff,
wpa_supplicant, xcb-util,
xdriver_xf86-input-{acepad,aiptek,evdev,joystick,keyboard},
xdriver_xf86-input-{mouse,synaptics,void},
xdriver_xf86-video-{chips,dummy,geode,glide,intel,nv,wsfb},

18
package/makedevs/makedevs.c
View File

@ -345,14 +345,22 @@ void bb_show_usage(void)
fprintf(stderr, "/dev/null c 666 0 0 1 3 0 0 -\n");
fprintf(stderr, "/dev/zero c 666 0 0 1 5 0 0 -\n");
fprintf(stderr, "/dev/hda b 640 0 0 3 0 0 0 -\n");
fprintf(stderr, "/dev/hda b 640 0 0 3 1 1 1 15\n\n");
fprintf(stderr, "/dev/hda b 640 0 0 3 1 1 1 15\n");
fprintf(stderr, "/dev/rtp b 640 0 0 250 0 0 1 5\n");
fprintf(stderr, "/dev/gps b 640 0 0 251 0 1 1 5\n");
fprintf(stderr, "/dev/uio b 640 0 0 252 0 1 2 5\n");
fprintf(stderr, "/dev/uio b 640 0 0 252 1 6 2 5\n\n");
fprintf(stderr, "Will Produce:\n");
fprintf(stderr, "/dev\n");
fprintf(stderr, "/dev/console\n");
fprintf(stderr, "/dev/null\n");
fprintf(stderr, "/dev/zero\n");
fprintf(stderr, "/dev/hda\n");
fprintf(stderr, "/dev/hda[0-15]\n");
fprintf(stderr, "/dev/hda[1-15] with minor numbers [1-15]\n");
fprintf(stderr, "/dev/rtp[0-4] with minor numbers [0-4]\n");
fprintf(stderr, "/dev/gps[1-5] with minor numbers [0-4]\n");
fprintf(stderr, "/dev/uio[1-5] with minor numbers 0,2,4,6,8\n");
fprintf(stderr, "/dev/uio[6-10] with minor numbers 1,3,5,7,9\n");
exit(1);
}
@ -489,9 +497,9 @@ int main(int argc, char **argv)
char *full_name_inc;
full_name_inc = xmalloc(strlen(full_name) + 8);
for (i = start; i < count; i++) {
sprintf(full_name_inc, "%s%d", full_name, i);
rdev = makedev(major, minor + (i * increment - start));
for (i = 0; i < count; i++) {
sprintf(full_name_inc, "%s%d", full_name, start + i);
rdev = makedev(major, minor + i * increment);
if (mknod(full_name_inc, mode, rdev) == -1) {
bb_perror_msg("line %d: Couldnt create node %s", linenum, full_name_inc);
ret = EXIT_FAILURE;