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authorreinelt <>2000-08-10 09:44:09 +0000
committerreinelt <>2000-08-10 09:44:09 +0000
commita71c28313e3e3ef0f2e235f78eaf38fca52deb1f (patch)
tree58f94e3a69cee7187c02a77f19890b99e0910cfc /lock.c
parentc6583cea7fd9fac922a9cf653a66b431a3539f44 (diff)
downloadlcd4linux-a71c28313e3e3ef0f2e235f78eaf38fca52deb1f.tar.gz
[lcd4linux @ 2000-08-10 09:44:09 by reinelt]
new debugging scheme: error(), info(), debug() uses syslog if in daemon mode
Diffstat (limited to 'lock.c')
-rw-r--r--lock.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/lock.c b/lock.c
index dc83a10..2e02f35 100644
--- a/lock.c
+++ b/lock.c
@@ -1,4 +1,4 @@
-/* $Id: lock.c,v 1.1 2000/04/07 05:42:20 reinelt Exp $
+/* $Id: lock.c,v 1.2 2000/08/10 09:44:09 reinelt Exp $
*
* UUCP style locking
*
@@ -20,6 +20,11 @@
*
*
* $Log: lock.c,v $
+ * Revision 1.2 2000/08/10 09:44:09 reinelt
+ *
+ * new debugging scheme: error(), info(), debug()
+ * uses syslog if in daemon mode
+ *
* Revision 1.1 2000/04/07 05:42:20 reinelt
*
* UUCP style lockfiles for the serial port
@@ -51,6 +56,7 @@
#include <sys/stat.h>
+#include "debug.h"
#include "lock.h"
@@ -71,18 +77,18 @@ pid_t lock_port (char *port)
snprintf(tempfile, sizeof(tempfile), LOCK, "TMP.XXXXXX");
if (mktemp(tempfile)==NULL) {
- fprintf(stderr, "mktemp(%s) failed.\n", tempfile);
+ error ("mktemp(%s) failed.", tempfile);
return -1;
}
if ((fd=creat(tempfile, 0664))==-1) {
- fprintf(stderr, "creat(%s) failed: %s\n", tempfile, strerror(errno));
+ error ("creat(%s) failed: %s", tempfile, strerror(errno));
return -1;
}
snprintf (buffer, sizeof(buffer), "%10d\n", (int)getpid());
if (write(fd, buffer, strlen(buffer))!=strlen(buffer)) {
- fprintf(stderr, "write(%s) failed: %s\n", tempfile, strerror(errno));
+ error ("write(%s) failed: %s", tempfile, strerror(errno));
close(fd);
unlink(tempfile);
return -1;
@@ -93,42 +99,42 @@ pid_t lock_port (char *port)
while (link(tempfile, lockfile)==-1) {
if (errno!=EEXIST) {
- fprintf(stderr, "link(%s, %s) failed: %s\n", tempfile, lockfile, strerror(errno));
+ error ("link(%s, %s) failed: %s", tempfile, lockfile, strerror(errno));
unlink(tempfile);
return -1;
}
if ((fd=open(lockfile, O_RDONLY))==-1) {
if (errno==ENOENT) continue; // lockfile disappared
- fprintf (stderr, "open(%s) failed: %s\n", lockfile, strerror(errno));
+ error ("open(%s) failed: %s", lockfile, strerror(errno));
unlink (tempfile);
return -1;
}
len=read(fd, buffer, sizeof(buffer)-1);
if (len<0) {
- fprintf (stderr, "read(%s) failed: %s\n", lockfile, strerror(errno));
+ error ("read(%s) failed: %s", lockfile, strerror(errno));
unlink (tempfile);
return -1;
}
buffer[len]='\0';
if (sscanf(buffer, "%d", &pid)!=1 || pid==0) {
- fprintf (stderr, "scan(%s) failed.\n", lockfile);
+ error ("scan(%s) failed.", lockfile);
unlink (tempfile);
return -1;
}
if (pid==getpid()) {
- fprintf (stderr, "%s already locked by us. uh-oh...\n", lockfile);
+ error ("%s already locked by us. uh-oh...", lockfile);
unlink(tempfile);
return 0;
}
if ((kill(pid, 0)==-1) && errno==ESRCH) {
- fprintf (stderr, "removing stale lockfile %s\n", lockfile);
+ error ("removing stale lockfile %s", lockfile);
if (unlink(lockfile)==-1 && errno!=ENOENT) {
- fprintf (stderr, "unlink(%s) failed: %s\n", lockfile, strerror(errno));
+ error ("unlink(%s) failed: %s", lockfile, strerror(errno));
unlink(tempfile);
return pid;
}