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Remove insane *_FILENO and EXIT_* usage

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Any system having different assignments than the usual 0, 1, 2 for
the standard file numbers and 0, 1 for the exit-statuses is broken
beyond repair.
Let's keep it simple and just use the numbers, no reason to fall
out of the window here and bend down for POSIX.
In one occasion, the ret-variable was not necessary. The check was
rewritten.

Signed-off-by: Christoph Lohmann <20h@r-36.net>
This commit is contained in:
FRIGN 2015-07-08 23:49:25 +02:00 committed by Christoph Lohmann
parent 92e092efe6
commit abfad4c4fc
1 changed files with 12 additions and 14 deletions
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26
st.c
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@ -513,7 +513,7 @@ static STREscape strescseq;
static int cmdfd; static int cmdfd;
static pid_t pid; static pid_t pid;
static Selection sel; static Selection sel;
static int iofd = STDOUT_FILENO; static int iofd = 1;
static char **opt_cmd = NULL; static char **opt_cmd = NULL;
static char *opt_io = NULL; static char *opt_io = NULL;
static char *opt_title = NULL; static char *opt_title = NULL;
@ -1207,7 +1207,7 @@ die(const char *errstr, ...) {
va_start(ap, errstr); va_start(ap, errstr);
vfprintf(stderr, errstr, ap); vfprintf(stderr, errstr, ap);
va_end(ap); va_end(ap);
exit(EXIT_FAILURE); exit(1);
} }
void void
@ -1256,12 +1256,12 @@ execsh(void) {
signal(SIGALRM, SIG_DFL); signal(SIGALRM, SIG_DFL);
execvp(prog, args); execvp(prog, args);
_exit(EXIT_FAILURE); _exit(1);
} }
void void
sigchld(int a) { sigchld(int a) {
int stat, ret; int stat;
pid_t p; pid_t p;
if((p = waitpid(pid, &stat, WNOHANG)) < 0) if((p = waitpid(pid, &stat, WNOHANG)) < 0)
@ -1270,10 +1270,9 @@ sigchld(int a) {
if(pid != p) if(pid != p)
return; return;
ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE; if (!WIFEXITED(stat) || WEXITSTATUS(stat))
if (ret != EXIT_SUCCESS)
die("child finished with error '%d'\n", stat); die("child finished with error '%d'\n", stat);
exit(EXIT_SUCCESS); exit(0);
} }
@ -1309,8 +1308,7 @@ ttynew(void) {
if(opt_io) { if(opt_io) {
term.mode |= MODE_PRINT; term.mode |= MODE_PRINT;
iofd = (!strcmp(opt_io, "-")) ? iofd = (!strcmp(opt_io, "-")) ?
STDOUT_FILENO : 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
open(opt_io, O_WRONLY | O_CREAT, 0666);
if(iofd < 0) { if(iofd < 0) {
fprintf(stderr, "Error opening %s:%s\n", fprintf(stderr, "Error opening %s:%s\n",
opt_io, strerror(errno)); opt_io, strerror(errno));
@ -1320,7 +1318,7 @@ ttynew(void) {
if (opt_line) { if (opt_line) {
if((cmdfd = open(opt_line, O_RDWR)) < 0) if((cmdfd = open(opt_line, O_RDWR)) < 0)
die("open line failed: %s\n", strerror(errno)); die("open line failed: %s\n", strerror(errno));
close(STDIN_FILENO); close(0);
dup(cmdfd); dup(cmdfd);
stty(); stty();
return; return;
@ -1337,9 +1335,9 @@ ttynew(void) {
case 0: case 0:
close(iofd); close(iofd);
setsid(); /* create a new process group */ setsid(); /* create a new process group */
dup2(s, STDIN_FILENO); dup2(s, 0);
dup2(s, STDOUT_FILENO); dup2(s, 1);
dup2(s, STDERR_FILENO); dup2(s, 2);
if(ioctl(s, TIOCSCTTY, NULL) < 0) if(ioctl(s, TIOCSCTTY, NULL) < 0)
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno)); die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
close(s); close(s);
@ -3871,7 +3869,7 @@ cmessage(XEvent *e) {
} else if(e->xclient.data.l[0] == xw.wmdeletewin) { } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
/* Send SIGHUP to shell */ /* Send SIGHUP to shell */
kill(pid, SIGHUP); kill(pid, SIGHUP);
exit(EXIT_SUCCESS); exit(0);
} }
} }