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Changed implementation in NdbDaemon slightly to handle

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bug lockf & F_TEST on linux alpha,sparc,sparc64

(http://sources.redhat.com/ml/libc-alpha/2000-10/msg00390.html)
This commit is contained in:
joreland@mysql.com 2004-11-03 11:29:19 +01:00
parent 07b25eaaa6
commit 1c9297329c
1 changed files with 16 additions and 4 deletions
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14
ndb/src/common/portlib/NdbDaemon.c
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@ -55,8 +55,10 @@ NdbDaemon_Make(const char* lockfile, const char* logfile, unsigned flags)
"%s: lseek failed: %s", lockfile, strerror(errno));
return -1;
}
#ifdef F_TLOCK
/* Test for lock before becoming daemon */
if (lockf(lockfd, F_TEST, 0) == -1) {
if (lockf(lockfd, F_TLOCK, 0) == -1)
{
if (errno == EACCES || errno == EAGAIN) { /* results may vary */
snprintf(NdbDaemon_ErrorText, NdbDaemon_ErrorSize,
"%s: already locked by pid=%ld", lockfile, NdbDaemon_DaemonPid);
@ -67,6 +69,7 @@ NdbDaemon_Make(const char* lockfile, const char* logfile, unsigned flags)
"%s: lock test failed: %s", lockfile, strerror(errno));
return -1;
}
#endif
/* Test open log file before becoming daemon */
if (logfile != NULL) {
logfd = open(logfile, O_CREAT|O_WRONLY|O_APPEND, 0644);
@ -77,6 +80,15 @@ NdbDaemon_Make(const char* lockfile, const char* logfile, unsigned flags)
return -1;
}
}
#ifdef F_TLOCK
if (lockf(lockfd, F_ULOCK, 0) == -1)
{
snprintf(NdbDaemon_ErrorText, NdbDaemon_ErrorSize,
"%s: fail to unlock", lockfile);
return -1;
}
#endif
/* Fork */
n = fork();
if (n == -1) {