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(NOHUP_FAILURE, NOHUP_FOUND_BUT_CANNOT_INVOKE): Define.

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(main): Use them.
This commit is contained in:
Jim Meyering
2003-07-13 09:25:21 +00:00
parent 7c4f69a2fa
commit 48606016b8
1 changed files with 14 additions and 5 deletions
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19
src/nohup.c
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@@ -34,6 +34,13 @@
#define AUTHORS "Jim Meyering"
/* This exit status indicates that `nohup' itself failed. */
#define NOHUP_FAILURE 127
/* This exit status indicates that `nohup' found the specified command
but failed to invoke it. */
#define NOHUP_FOUND_BUT_CANNOT_INVOKE 126
char *program_name;
void
@@ -90,7 +97,7 @@ main (int argc, char **argv)
if (argc <= 1)
{
error (0, 0, _("too few arguments"));
usage (EXIT_FAILURE);
usage (NOHUP_FAILURE);
}
/* If standard output is a tty, redirect it (appending) to a file.
@@ -114,14 +121,14 @@ main (int argc, char **argv)
int saved_errno2 = errno;
error (0, saved_errno, _("failed to open %s"), quote (file));
error (0, saved_errno2, _("failed to open %s"), quote (in_home));
exit (EXIT_FAILURE);
exit (NOHUP_FAILURE);
}
file = in_home;
}
/* Redirect standard output to the file. */
if (dup2 (fd, STDOUT_FILENO) == -1)
error (EXIT_FAILURE, errno, _("failed to redirect standard output"));
error (NOHUP_FAILURE, errno, _("failed to redirect standard output"));
error (0, 0, _("appending output to %s"), quote (file));
if (in_home)
@@ -142,7 +149,7 @@ main (int argc, char **argv)
saved_stderr_fd = dup (STDERR_FILENO);
if (dup2 (fd, STDERR_FILENO) == -1)
error (EXIT_FAILURE, errno, _("failed to redirect standard error"));
error (NOHUP_FAILURE, errno, _("failed to redirect standard error"));
}
/* Ignore hang-up signals. */
@@ -164,7 +171,9 @@ main (int argc, char **argv)
char **cmd = argv + 1;
execvp (*cmd, cmd);
exit_status = (errno == ENOENT ? 127 : 126);
exit_status = (errno == ENOENT
? NOHUP_FAILURE
: NOHUP_FOUND_BUT_CANNOT_INVOKE);
saved_errno = errno;
/* The execve failed. Output a diagnostic to stderr only if: