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| author | Jeremie Koenig | 2010-07-29 04:29:52 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2010-07-30 03:03:29 +0200 |
| commit | 68fca4cd55e7bf6075eb1ccd303ae57a7ec1b8da (patch) | |
| tree | f2a7a27063cb173e7898d367d97d500ae7c0c750 /loginutils | |
| parent | e7a0632b7b38f635853a08c276dad2fbd395ba92 (diff) | |
| download | busybox-68fca4cd55e7bf6075eb1ccd303ae57a7ec1b8da.zip busybox-68fca4cd55e7bf6075eb1ccd303ae57a7ec1b8da.tar.gz | |
vlock: disable linux console calls on other systems
Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'loginutils')
| -rw-r--r-- | loginutils/Config.src | 1 | ||||
| -rw-r--r-- | loginutils/vlock.c | 15 |
2 files changed, 13 insertions, 3 deletions
diff --git a/loginutils/Config.src b/loginutils/Config.src index 6ec2893..5d497c4 100644 --- a/loginutils/Config.src +++ b/loginutils/Config.src @@ -295,7 +295,6 @@ config SULOGIN config VLOCK bool "vlock" default y - depends on PLATFORM_LINUX select FEATURE_SUID help Build the "vlock" applet which allows you to lock (virtual) terminals. diff --git a/loginutils/vlock.c b/loginutils/vlock.c index 85f489c..59aeb54 100644 --- a/loginutils/vlock.c +++ b/loginutils/vlock.c @@ -15,9 +15,11 @@ /* Fixed by Erik Andersen to do passwords the tinylogin way... * It now works with md5, sha1, etc passwords. */ -#include <sys/vt.h> #include "libbb.h" +#ifdef __linux__ +#include <sys/vt.h> + static void release_vt(int signo UNUSED_PARAM) { /* If -a, param is 0, which means: @@ -30,14 +32,17 @@ static void acquire_vt(int signo UNUSED_PARAM) /* ACK to kernel that switch to console is successful */ ioctl(STDIN_FILENO, VT_RELDISP, VT_ACKACQ); } +#endif int vlock_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int vlock_main(int argc UNUSED_PARAM, char **argv) { +#ifdef __linux__ struct vt_mode vtm; + struct vt_mode ovtm; +#endif struct termios term; struct termios oterm; - struct vt_mode ovtm; struct passwd *pw; pw = xgetpwuid(getuid()); @@ -55,6 +60,7 @@ int vlock_main(int argc UNUSED_PARAM, char **argv) + (1 << SIGINT ) , SIG_IGN); +#ifdef __linux__ /* We will use SIGUSRx for console switch control: */ /* 1: set handlers */ signal_SA_RESTART_empty_mask(SIGUSR1, release_vt); @@ -62,12 +68,14 @@ int vlock_main(int argc UNUSED_PARAM, char **argv) /* 2: unmask them */ sig_unblock(SIGUSR1); sig_unblock(SIGUSR2); +#endif /* Revert stdin/out to our controlling tty * (or die if we have none) */ xmove_fd(xopen(CURRENT_TTY, O_RDWR), STDIN_FILENO); xdup2(STDIN_FILENO, STDOUT_FILENO); +#ifdef __linux__ xioctl(STDIN_FILENO, VT_GETMODE, &vtm); ovtm = vtm; /* "console switches are controlled by us, not kernel!" */ @@ -75,6 +83,7 @@ int vlock_main(int argc UNUSED_PARAM, char **argv) vtm.relsig = SIGUSR1; vtm.acqsig = SIGUSR2; ioctl(STDIN_FILENO, VT_SETMODE, &vtm); +#endif tcgetattr(STDIN_FILENO, &oterm); term = oterm; @@ -95,7 +104,9 @@ int vlock_main(int argc UNUSED_PARAM, char **argv) puts("Password incorrect"); } while (1); +#ifdef __linux__ ioctl(STDIN_FILENO, VT_SETMODE, &ovtm); +#endif tcsetattr_stdin_TCSANOW(&oterm); fflush_stdout_and_exit(EXIT_SUCCESS); } |