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replace eprint() functions with BSD error functions

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This commit is contained in:
Matthias-Christian Ott 2008-07-04 18:05:08 +02:00
parent d83cbc27b9
commit f982c1c37c
5 changed files with 31 additions and 45 deletions
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12
pty.c
View File

@ -22,22 +22,22 @@ getpty(void) {
ptm = open("/dev/ptmx", O_RDWR); ptm = open("/dev/ptmx", O_RDWR);
if(ptm == -1) if(ptm == -1)
if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1) if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
eprintn("error, cannot open pty"); err(EXIT_FAILURE, "cannot open pty");
#endif #endif
#if defined(_XOPEN_SOURCE) #if defined(_XOPEN_SOURCE)
if(ptm != -1) { if(ptm != -1) {
if(grantpt(ptm) == -1) if(grantpt(ptm) == -1)
eprintn("error, cannot grant access to pty"); err(EXIT_FAILURE, "cannot grant access to pty");
if(unlockpt(ptm) == -1) if(unlockpt(ptm) == -1)
eprintn("error, cannot unlock pty"); err(EXIT_FAILURE, "cannot unlock pty");
ptsdev = ptsname(ptm); ptsdev = ptsname(ptm);
if(!ptsdev) if(!ptsdev)
eprintn("error, slave pty name undefined"); err(EXIT_FAILURE, "slave pty name undefined");
pts = open(ptsdev, O_RDWR); pts = open(ptsdev, O_RDWR);
if(pts == -1) if(pts == -1)
eprintn("error, cannot open slave pty"); err(EXIT_FAILURE, "cannot open slave pty");
} }
else else
eprintn("error, cannot open pty"); err(EXIT_FAILURE, "cannot open pty");
#endif #endif
} }

14
st.c
View File

@ -1,13 +1,17 @@
/* See LICENSE file for copyright and license details. */ /* See LICENSE file for copyright and license details. */
#include "util.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#include <string.h> #include <string.h>
int int
main(int argc, char *argv[]) { main(int argc, char *argv[]) {
if(argc == 2 && !strcmp("-v", argv[1])) if(argc == 2 && !strcmp("-v", argv[1])) {
eprint("st-"VERSION", © 2007-2008 st engineers, see LICENSE for details\n"); fprintf(stderr, "st-"VERSION", © 2007-2008 st engineers, see LICENSE for details\n");
else if(argc != 1) exit(EXIT_SUCCESS);
eprint("usage: st [-v]\n"); }
else if(argc != 1) {
fprintf(stderr, "usage: st [-v]\n");
exit(EXIT_FAILURE);
}
return 0; return 0;
} }

25
std.c
View File

@ -3,6 +3,7 @@
#include <sys/types.h> #include <sys/types.h>
#include <sys/wait.h> #include <sys/wait.h>
#include <ctype.h> #include <ctype.h>
#include <err.h>
#include <signal.h> #include <signal.h>
#include <stdarg.h> #include <stdarg.h>
#include <stdio.h> #include <stdio.h>
@ -73,7 +74,7 @@ getch() {
if(rbuf.i++ >= rbuf.n) { if(rbuf.i++ >= rbuf.n) {
rbuf.n = read(ptm, rbuf.data, LENGTH(rbuf.data)); rbuf.n = read(ptm, rbuf.data, LENGTH(rbuf.data));
if(rbuf.n == -1) if(rbuf.n == -1)
eprintn("error, cannot read from slave pty"); err(EXIT_FAILURE, "cannot read from slave pty");
rbuf.i = 0; rbuf.i = 0;
} }
return rbuf.data[rbuf.i]; return rbuf.data[rbuf.i];
@ -113,7 +114,7 @@ parseesc(void) {
qmark = 1; qmark = 1;
else if(c == ';') { else if(c == ';') {
if(!digit) if(!digit)
eprint("syntax error\n"); errx(EXIT_FAILURE, "syntax error");
digit = 0; digit = 0;
j++; j++;
} }
@ -216,7 +217,7 @@ shell(void) {
pid = fork(); pid = fork();
switch(pid) { switch(pid) {
case -1: case -1:
eprint("error, cannot fork\n"); err(EXIT_FAILURE, "cannot fork");
case 0: case 0:
setsid(); setsid();
dup2(pts, STDIN_FILENO); dup2(pts, STDIN_FILENO);
@ -237,7 +238,7 @@ sigchld(int n) {
int ret; int ret;
if(waitpid(pid, &ret, 0) == -1) if(waitpid(pid, &ret, 0) == -1)
eprintn("error, waiting for child failed"); err(EXIT_FAILURE, "waiting for child failed");
if(WIFEXITED(ret)) if(WIFEXITED(ret))
exit(WEXITSTATUS(ret)); exit(WEXITSTATUS(ret));
else else
@ -257,7 +258,7 @@ unbuffer(void) {
void void
ungetch(int c) { ungetch(int c) {
if(rbuf.i + 1 >= rbuf.n) if(rbuf.i + 1 >= rbuf.n)
eprint("error, read buffer full\n"); errx(EXIT_FAILURE, "read buffer full");
rbuf.data[rbuf.i++] = c; rbuf.data[rbuf.i++] = c;
} }
@ -266,10 +267,14 @@ main(int argc, char *argv[]) {
fd_set rfds; fd_set rfds;
int r; int r;
if(argc == 2 && !strcmp("-v", argv[1])) if(argc == 2 && !strcmp("-v", argv[1])) {
eprint("std-"VERSION", © 2008 Matthias-Christian Ott\n"); fprintf(stderr, "std-"VERSION", © 2008 Matthias-Christian Ott\n");
else if(argc == 1) exit(EXIT_SUCCESS);
eprint("usage: st [-v]\n"); }
else if(argc == 1) {
fprintf(stderr, "usage: st [-v]\n");
exit(EXIT_FAILURE);
}
getpty(); getpty();
shell(); shell();
FD_ZERO(&rfds); FD_ZERO(&rfds);
@ -278,7 +283,7 @@ main(int argc, char *argv[]) {
for(;;) { for(;;) {
r = select(ptm + 1, &rfds, NULL, NULL, NULL); r = select(ptm + 1, &rfds, NULL, NULL, NULL);
if(r == -1) if(r == -1)
eprintn("error, cannot select"); err(EXIT_FAILURE, "cannot select");
if(FD_ISSET(ptm, &rfds)) { if(FD_ISSET(ptm, &rfds)) {
do { do {
c = getch(); c = getch();

23
util.c
View File

@ -11,27 +11,6 @@ emallocz(unsigned int size) {
void *res = calloc(1, size); void *res = calloc(1, size);
if(!res) if(!res)
eprint("fatal: could not malloc() %u bytes\n", size); err(EXIT_FAILURE, "could not malloc() %u bytes\n", size);
return res; return res;
} }
void
eprint(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void
eprintn(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
fprintf(stderr, ": %s\n", strerror(errno));
exit(EXIT_FAILURE);
}

2
util.h
View File

@ -1,5 +1,3 @@
/* See LICENSE file for copyright and license details. */ /* See LICENSE file for copyright and license details. */
void *emallocz(unsigned int size); void *emallocz(unsigned int size);
void eprint(const char *errstr, ...);
void eprintn(const char *errstr, ...);