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[test/any2ppm] Daemonize without BSD's daemon().

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Solaris libc doesn't provide daemon() so implement
any2ppm daemon's detaching without it.
This commit is contained in:
M Joonas Pihlaja 2009-05-24 23:46:13 +03:00
parent aafff0b952
commit d1994d1ac2
2 changed files with 58 additions and 6 deletions
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2
test/Makefile.am
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@ -1188,7 +1188,7 @@ check_PROGRAMS += any2ppm
any2ppm_CFLAGS = $(AM_CFLAGS) $(POPPLER_CFLAGS) $(LIBRSVG_CFLAGS) $(LIBSPECTRE_CFLAGS)
# add LDADD, so poppler/librsvg uses "our" cairo
any2ppm_LDFLAGS = $(AM_LDFLAGS) $(CAIRO_TEST_UNDEFINED_LDFLAGS)
any2ppm_LDADD = $(top_builddir)/util/cairo-script/libcairo-script-interpreter.la $(top_builddir)/src/libcairo.la $(CAIRO_LDADD) $(POPPLER_LIBS) $(LIBRSVG_LIBS) $(LIBSPECTRE_LIBS)
any2ppm_LDADD = $(top_builddir)/util/cairo-script/libcairo-script-interpreter.la $(top_builddir)/src/libcairo.la $(CAIRO_LDADD) $(CAIROBOILERPLATE_LIBS) $(POPPLER_LIBS) $(LIBRSVG_LIBS) $(LIBSPECTRE_LIBS)
endif
if CAIRO_CAN_TEST_PDF_SURFACE

62
test/any2ppm.c
View file

@ -89,11 +89,7 @@
#define SOCKET_PATH "./.any2ppm"
#define TIMEOUT 60000 /* 60 seconds */
#if _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
#define CAN_RUN_AS_DAEMON 1
#else
#define CAN_RUN_AS_DAEMON 0
#endif
#endif
#define ARRAY_LENGTH(A) (sizeof (A) / sizeof (A[0]))
@ -662,6 +658,62 @@ write_pid_file (void)
return ret;
}
static int
open_devnull_to_fd (int want_fd, int flags)
{
int error;
int got_fd;
close (want_fd);
got_fd = open("/dev/null", flags | O_CREAT, 0700);
if (got_fd == -1)
return -1;
error = dup2 (got_fd, want_fd);
close (got_fd);
return error;
}
static int
daemonize (void)
{
void (*oldhup) (int);
/* Let the parent go. */
switch (fork ()) {
case -1: return -1;
case 0: break;
default: _exit (0);
}
/* Become session leader. */
if (setsid () == -1)
return -1;
/* Refork to yield session leadership. */
oldhup = signal (SIGHUP, SIG_IGN);
switch (fork ()) { /* refork to yield session leadership. */
case -1: return -1;
case 0: break;
default: _exit (0);
}
signal (SIGHUP, oldhup);
/* Establish stdio. */
if (open_devnull_to_fd (0, O_RDONLY) == -1)
return -1;
if (open_devnull_to_fd (1, O_WRONLY | O_APPEND) == -1)
return -1;
if (dup2 (1, 2) == -1)
return -1;
return 0;
}
static const char *
any2ppm_daemon (void)
{
@ -707,7 +759,7 @@ any2ppm_daemon (void)
}
/* ready for client connection - detach from parent/terminal */
if (getenv ("ANY2PPM_NODAEMON") == NULL && daemon (1, 0) == -1) {
if (getenv ("ANY2PPM_NODAEMON") == NULL && daemonize () == -1) {
close (sk);
return "unable to detach from parent";
}