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nohup: Open nohup.out WRONLY

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Open nohup.out write-only instead of not specifying the access permissions
instead of getting undefined behavior (which probably results in stdout
not being writable).
This commit is contained in:
Arthur Williams 2021-09-03 19:08:21 -05:00 committed by Michael Forney
parent 371f3cb5ec
commit 2c2a7f54ab
1 changed files with 1 additions and 1 deletions
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nohup.c
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@ -31,7 +31,7 @@ main(int argc, char *argv[])
enprintf(127, "signal HUP:"); enprintf(127, "signal HUP:");
if (isatty(STDOUT_FILENO)) { if (isatty(STDOUT_FILENO)) {
if ((fd = open("nohup.out", O_APPEND | O_CREAT, S_IRUSR | S_IWUSR)) < 0) if ((fd = open("nohup.out", O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR)) < 0)
enprintf(127, "open nohup.out:"); enprintf(127, "open nohup.out:");
if (dup2(fd, STDOUT_FILENO) < 0) if (dup2(fd, STDOUT_FILENO) < 0)
enprintf(127, "dup2:"); enprintf(127, "dup2:");