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Close file descriptors

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@17514 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Adam Fedor 2003-08-23 03:24:25 +00:00
parent bc7f655703
commit a1bfcac8e8
2 changed files with 101 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2003-08-22 Adam Fedor <fedor@gnu.org>
* Tools/gsnd/gsnd.m (main): Close any open file descriptors so
we can be a proper daemon.
2003-08-22 Gregory John Casamento <greg_casamento@yahoo.com>
* Source/GSNibTemplates.[hm]: Added new template classes to a new file

96
Tools/gsnd/gsnd.m
View file

@ -24,11 +24,16 @@
#include "portaudio/pa_common/portaudio.h"
#include <math.h>
#include <unistd.h>
#include <fcntl.h>
#ifdef __MINGW__
#include "process.h"
#endif
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif
#define GSNDNAME @"GNUstepGSSoundServer"
#define FRAME_SIZE 4
#define BUFFER_SIZE_IN_FRAMES (1024 * FRAME_SIZE)
@ -60,6 +65,8 @@
#define CLAMP(x, low, high) \
(((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
static int is_daemon = 0; /* Currently running as daemon. */
short **_X;
short **_Y;
unsigned int _Time;
@ -77,6 +84,66 @@ int resamplerReadData(int inCount, short inArray[], short *outPtr[],
int dataArraySize, int Xoff, BOOL init_count);
int resampleError(char *s);
static char ebuf[2048];
#ifdef HAVE_SYSLOG
static int log_priority;
static void
gsnd_log (int prio)
{
if (is_daemon)
{
syslog (log_priority | prio, ebuf);
}
else if (prio == LOG_INFO)
{
write (1, ebuf, strlen (ebuf));
write (1, "\n", 1);
}
else
{
write (2, ebuf, strlen (ebuf));
write (2, "\n", 1);
}
if (prio == LOG_CRIT)
{
if (is_daemon)
{
syslog (LOG_CRIT, "exiting.");
}
else
{
fprintf (stderr, "exiting.\n");
fflush (stderr);
}
exit(EXIT_FAILURE);
}
}
#else
#define LOG_CRIT 2
#define LOG_DEBUG 0
#define LOG_ERR 1
#define LOG_INFO 0
#define LOG_WARNING 0
void
gsnd_log (int prio)
{
write (2, ebuf, strlen (ebuf));
write (2, "\n", 1);
if (prio == LOG_CRIT)
{
fprintf (stderr, "exiting.\n");
fflush (stderr);
exit(EXIT_FAILURE);
}
}
#endif
@protocol GSSndObj
- (void)setIdentifier:(NSString *)identifier;
@ -969,6 +1036,7 @@ static int paCallback(void *inputBuffer,
int main(int argc, char** argv, char **env)
{
int c;
CREATE_AUTORELEASE_POOL(pool);
#ifdef GS_PASS_ARGUMENTS
@ -1007,6 +1075,34 @@ int main(int argc, char** argv, char **env)
}
#endif
/*
* Ensure we don't have any open file descriptors which may refer
* to sockets bound to ports we may try to use.
*
* Use '/dev/null' for stdin and stdout. Assume stderr is ok.
*/
for (c = 0; c < FD_SETSIZE; c++)
{
if (is_daemon || (c != 2))
{
(void)close(c);
}
}
if (open("/dev/null", O_RDONLY) != 0)
{
sprintf(ebuf, "failed to open stdin from /dev/null (%s)\n",
strerror(errno));
gsnd_log(LOG_CRIT);
exit(EXIT_FAILURE);
}
if (open("/dev/null", O_WRONLY) != 1)
{
sprintf(ebuf, "failed to open stdout from /dev/null (%s)\n",
strerror(errno));
gsnd_log(LOG_CRIT);
exit(EXIT_FAILURE);
}
gsnd = [[SoundServer alloc] init];
if (gsnd == nil) {