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Code

Switch from using signal() to sigaction() and friends, so that SA_RESTART can

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be used. This is required for Solaris and possibly others, where signal handlers
have to be reinstalled after having caught one signal via signal(). Also prevent
Ezstream from being killed by a handled signal in streamFile(), where they
can interrupt fread()'s system calls. This improves matters, but isn't perfect,
yet. A SIGHUP signal can still cause skipping to the next track, which should
be triggered only by SIGUSR1.


git-svn-id: https://svn.xiph.org/trunk/ezstream@12563 0101bb08-14d6-0310-b084-bc0e0c8e3800
This commit is contained in:
moritz 2007-02-25 16:00:41 +00:00
parent 733c989d1b
commit ea8d29f742
1 changed files with 30 additions and 16 deletions
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46
src/ezstream.c
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@ -58,6 +58,7 @@
# include "strlfctns.h"
#endif
#include "configfile.h"
#include "ezsignals.h"
#include "playlist.h"
#include "util.h"
@ -81,13 +82,13 @@
#endif /* WIN32 */
#ifdef HAVE___PROGNAME
extern char *__progname;
extern char *__progname;
#else
char *__progname;
char *__progname;
#endif /* HAVE___PROGNAME */
int qFlag;
int vFlag;
int qFlag;
int vFlag;
EZCONFIG *pezConfig = NULL;
static const char *blankString = "";
@ -95,9 +96,11 @@ playlist_t *playlist = NULL;
int playlistMode = 0;
#ifdef HAVE_SIGNALS
volatile sig_atomic_t rereadPlaylist = 0;
volatile sig_atomic_t rereadPlaylist_notify = 0;
volatile sig_atomic_t skipTrack = 0;
const int ezstream_signals[] = { SIGHUP, SIGUSR1 };
volatile sig_atomic_t rereadPlaylist = 0;
volatile sig_atomic_t rereadPlaylist_notify = 0;
volatile sig_atomic_t skipTrack = 0;
void
sig_handler(int sig)
@ -115,9 +118,9 @@ sig_handler(int sig)
}
}
#else
int rereadPlaylist = 0;
int rereadPlaylist_notify = 0;
int skipTrack = 0;
int rereadPlaylist = 0;
int rereadPlaylist_notify = 0;
int skipTrack = 0;
#endif /* HAVE_SIGNALS */
typedef struct tag_ID3Tag {
@ -664,10 +667,14 @@ streamFile(shout_t *shout, const char *fileName)
break;
}
}
if (ferror(filepstream))
printf("%s: streamFile(): Error while reading '%s': %s\n",
__progname, fileName, strerror(errno));
else
if (ferror(filepstream)) {
if (errno == EINTR) {
clearerr(filepstream);
retval = 1;
} else
printf("%s: streamFile(): Error while reading '%s': %s\n",
__progname, fileName, strerror(errno));
} else
retval = 1;
if (popenFlag)
@ -769,6 +776,9 @@ main(int argc, char *argv[])
shout_t *shout;
extern char *optarg;
extern int optind;
#ifdef HAVE_SIGNALS
struct sigaction act;
#endif
__progname = getProgname(argv[0]);
pezConfig = getEZConfig();
@ -994,8 +1004,12 @@ main(int argc, char *argv[])
}
#ifdef HAVE_SIGNALS
signal(SIGHUP, sig_handler);
signal(SIGUSR1, sig_handler);
memset(&act, 0, sizeof(act));
act.sa_handler = sig_handler;
# ifdef SA_RESTART
act.sa_flags = SA_RESTART;
# endif
SIGS_INSTALL(ezstream_signals, &act);
#endif /* HAVE_SIGNALS */
if (qFlag) {