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Rewritten.

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master
Amadeusz Żołnowski 13 years ago
parent abf6fdcc2b
commit 5ebf42d03e
1 changed files with 157 additions and 93 deletions
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plymouth.c
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@ -16,179 +16,243 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <assert.h>
#include <einfo.h>
#include <rc.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef DEBUG
# define DBGSTR(x) fprintf(dbg, " " #x "=\"%s\"", x)
# define DBG(x) einfo("[plymouth-plugin] " x)
#else
# define DBGSTR(x)
# define DBG(x)
#endif
#define BUFFER_SIZE 300
enum {
PLY_MODE_BOOT,
PLY_MODE_SHUTDOWN
};
int ply_update(const char* hook, const char* name)
int command(const char* cmd)
{
char buffer[100];
sprintf(buffer, "plymouth update --status=%s-%s", hook, name);
if(system(buffer) != 0) {
ewarn("Failed on sending status update to Plymouth daemon!");
return 1;
int rv = system(cmd);
#if DEBUG
if(rv != 0) {
ewarn("[plymouth-plugin] command(\"%s\"): rv=%d", cmd, rv);
}
return 0;
#endif
return rv;
}
int ply_text(const char* hook, const char* name)
int commandf(const char* cmd, ...)
{
char buffer[100];
sprintf(buffer, "plymouth message --text=\"%s %s\"", hook, name);
if(system(buffer) != 0) {
ewarn("Failed on sending message to Plymouth daemon!");
return 1;
static char buffer[BUFFER_SIZE];
va_list ap;
int rv;
va_start(ap, cmd);
rv = vsnprintf(buffer, BUFFER_SIZE, cmd, ap);
va_end(ap);
if(rv >= BUFFER_SIZE) {
eerror("[plymouth-plugin] command(\"%s\"): buffer overflow", buffer);
return -1;
}
return 0;
return command(buffer);
}
int ply_start()
bool ply_message(const char* hook, const char* name)
{
if(system("plymouth --ping") != 0) {
if(system("plymouthd") != 0) {
eerror("Starting Plymouth daemon failed!");
return 1;
}
}
return (commandf("/bin/plymouth message --text=\"%s %s\"", hook, name) == 0);
}
if(system("plymouth --sysinit") != 0) {
eerror("plymouth --sysinit failed!");
return 1;
}
if(system("plymouth --show-splash") != 0) {
eerror("Couldn't show Plymouth splash!");
return 1;
bool ply_ping()
{
return (system("/bin/plymouth --ping") == 0);
}
bool ply_quit(int mode)
{
int rv = 0;
if(mode == PLY_MODE_BOOT)
rv = command("/bin/plymouth quit");
else if(mode == PLY_MODE_SHUTDOWN)
rv = command("/bin/plymouth quit --retain-splash");
else
assert(0 && "Unknown mode");
return (rv == 0);
}
bool ply_start(int mode)
{
int rv = 0;
if(!ply_ping()) {
ebegin("Starting plymouthd ...");
#define PLYD "/sbin/plymouthd --attach-to-session --pid-file=/run/plymouth/pid --mode="
if(mode == PLY_MODE_BOOT)
rv = command(PLYD "boot");
else if(mode == PLY_MODE_SHUTDOWN)
rv = command(PLYD "shutdown");
else
assert(0 && "Unknown mode");
#undef PLYD
eend(rv, "plymouthd?");
if((rv == 0) && command("/bin/plymouth --show-splash") != 0)
return false;
}
return 0;
return true;
}
int ply_stop()
bool ply_update_status(int hook, const char* name)
{
if(system("plymouth --quit") != 0) {
eerror("Error when quiting Plymouth daemon.");
return 1;
return (commandf("/bin/plymouth update --status=%d-%s", hook, name) == 0);
}
bool ply_update_rootfs_rw()
{
const int RWDIR = R_OK | W_OK | X_OK;
if(access("/var/lib/plymouth", RWDIR) != 0
|| access("/var/log", RWDIR) != 0) {
eerror("[plymouth-plugin] /var/lib/plymouth and /var/log need to be "
"writable at this stage, but are not!");
return false;
}
return 0;
return (command("/bin/plymouth update-root-fs --read-write") == 0);
}
int rc_plugin_hook(RC_HOOK hook, const char *name)
{
int retval = 0;
int rv = 0;
char* runlevel = rc_runlevel_get();
const char* bootlevel = getenv("RC_BOOTLEVEL");
const char* defaultlevel = getenv("RC_DEFAULTLEVEL");
#ifdef DEBUG
FILE* dbg;
if(strcmp(runlevel, RC_LEVEL_SHUTDOWN) == 0)
dbg = fopen("/plymouth.log", "a");
else
dbg = fopen("/dev/.initramfs/plymouth.log", "a");
fprintf(dbg, "hook=%d", hook);
#endif
einfo("hook=%d name=%s runlvl=%s plyd=%d", hook, name, runlevel,
ply_ping());
/* Don't do anything if we're not booting or shutting down. */
if(!(rc_runlevel_starting() || rc_runlevel_stopping())) {
if(!(hook == RC_HOOK_RUNLEVEL_STOP_IN ||
hook == RC_HOOK_RUNLEVEL_STOP_OUT ||
hook == RC_HOOK_RUNLEVEL_START_IN ||
hook == RC_HOOK_RUNLEVEL_START_OUT))
goto exit;
switch(hook) {
case RC_HOOK_RUNLEVEL_STOP_IN:
case RC_HOOK_RUNLEVEL_STOP_OUT:
case RC_HOOK_RUNLEVEL_START_IN:
case RC_HOOK_RUNLEVEL_START_OUT:
/* Switching runlevels, so we're booting or shutting down.*/
break;
default:
DBG("Not booting or shutting down");
goto exit;
}
}
/* It's assumed in ply_* functions that 'name' is not longer than 50 chars.
*/
if(strlen(name) > 50)
goto exit;
DBG("switch1");
DBGSTR(name);
DBGSTR(runlevel);
switch(hook) {
case RC_HOOK_RUNLEVEL_START_IN:
case RC_HOOK_RUNLEVEL_STOP_IN:
case RC_HOOK_SERVICE_START_IN:
case RC_HOOK_SERVICE_STOP_IN:
ply_update_status(hook, name);
break;
default:
break;
}
DBG("switch2");
switch(hook) {
case RC_HOOK_RUNLEVEL_STOP_IN:
retval |= ply_update("RUNLEVEL_STOP_IN", name);
/* Start the Plymouth daemon and show splash when system is being shut
* down. */
if(strcmp(name, RC_LEVEL_SHUTDOWN) == 0) {
ply_start();
DBG("ply_start(PLY_MODE_SHUTDOWN)");
if(!ply_start(PLY_MODE_SHUTDOWN)
|| !ply_update_rootfs_rw())
rv = 1;
}
break;
case RC_HOOK_RUNLEVEL_STOP_OUT:
retval |= ply_update("RUNLEVEL_STOP_OUT", name);
break;
case RC_HOOK_RUNLEVEL_START_IN:
/* Start the Plymouth daemon and show splash when entering the boot
* runlevel. Required /proc and /sys should already be mounted in
* sysinit runlevel. */
if(strcmp(name, bootlevel) == 0) {
if((retval |= ply_start()) != 0)
goto exit;
DBG("ply_start(PLY_MODE_BOOT)");
if(!ply_start(PLY_MODE_BOOT))
rv = 1;
}
retval |= ply_update("RUNLEVEL_START_IN", name);
break;
case RC_HOOK_RUNLEVEL_START_OUT:
retval |= ply_update("RUNLEVEL_START_OUT", name);
/* Stop the Plymouth daemon right after default runlevel is started. */
if(strcmp(name, defaultlevel) == 0) {
retval |= ply_stop();
DBG("ply_quit(PLY_MODE_BOOT)");
if(!ply_quit(PLY_MODE_BOOT))
rv = 1;
}
break;
case RC_HOOK_SERVICE_START_NOW:
retval |= ply_text("Starting service", name);
break;
case RC_HOOK_SERVICE_START_OUT:
break;
case RC_HOOK_SERVICE_START_DONE:
retval |= ply_update("SERVICE_START_DONE", name);
case RC_HOOK_SERVICE_STOP_IN:
/* Quit Plymouth when we're going to lost write access to /var/... */
if(strcmp(name, "localmount") == 0 &&
strcmp(runlevel, RC_LEVEL_SHUTDOWN) == 0) {
DBG("ply_quit(PLY_MODE_SHUTDOWN)");
if(!ply_quit(PLY_MODE_SHUTDOWN))
rv = 1;
}
break;
case RC_HOOK_SERVICE_STOP_NOW:
retval |= ply_text("Stopping service", name);
if(!ply_message("Stopping service", name))
rv = 1;
break;
case RC_HOOK_SERVICE_STOP_DONE:
retval |= ply_update("SERVICE_STOP_DONE", name);
case RC_HOOK_SERVICE_START_NOW:
if(!ply_message("Starting service", name))
rv = 1;
break;
case RC_HOOK_ABORT:
break;
case RC_HOOK_SERVICE_START_OUT:
/* Start Plymouth daemon if not yet started and tell we have rw access
* to /var/... */
if(strcmp(name, "localmount") == 0 &&
strcmp(runlevel, RC_LEVEL_SHUTDOWN) != 0) {
DBG("ply_update_rootfs_rw()");
if(!ply_update_rootfs_rw())
rv = 1;
}
break;
default:
break;
}
exit:
#ifdef DEBUG
fwrite("\n", 1, 1, dbg);
fclose(dbg);
#endif
exit:
free(runlevel);
return retval;
return rv;
}

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