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abuild-fetch: retry to create lock on ESTALE

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This commit is contained in:
Natanael Copa 2016-05-16 13:15:42 +00:00
parent bd5636c916
commit 5dfc67bf33
1 changed files with 10 additions and 2 deletions
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12
abuild-fetch.c
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@ -26,6 +26,7 @@ THE SOFTWARE.
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
@ -99,9 +100,16 @@ int fetch(char *url, const char *destdir)
err(1, lockfile);
if (fcntl(lockfd, F_SETLK, &fl) < 0) {
int i;
printf("Waiting for %s ...\n", lockfile);
if (fcntl(lockfd, F_SETLKW, &fl) < 0)
err(1, "fcntl(F_SETLKW)");
for (i=0; i<10; i++) {
int r = fcntl(lockfd, F_SETLKW, &fl);
if (r == 0)
break;
if (r == -1 && errno != ESTALE)
err(1, "fcntl(F_SETLKW)");
sleep(1);
}
}
if (access(outfile, F_OK) == 0)