106 lines
2.3 KiB
Diff
106 lines
2.3 KiB
Diff
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Index: lib/libutil/pty.c
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===================================================================
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RCS file: /home/ncvs/src/lib/libutil/pty.c,v
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retrieving revision 1.15
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diff -u -I__FBSDID -I$FreeBSD -r1.15 pty.c
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--- lib/libutil/pty.c 18 Oct 2003 10:04:16 -0000 1.15
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+++ lib/libutil/pty.c 10 Jan 2008 20:50:22 -0000
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@@ -54,50 +54,55 @@
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#include <unistd.h>
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int
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-openpty(int *amaster, int *aslave, char *name, struct termios *termp, struct winsize *winp)
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+openpty(int *amaster, int *aslave, char *name, struct termios *termp,
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+ struct winsize *winp)
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{
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- char line[] = "/dev/ptyXX";
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- const char *cp1, *cp2;
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- int master, slave, ttygid;
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- struct group *gr;
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-
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- if ((gr = getgrnam("tty")) != NULL)
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- ttygid = gr->gr_gid;
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- else
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- ttygid = -1;
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-
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- for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
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- line[8] = *cp1;
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- for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
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- line[5] = 'p';
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- line[9] = *cp2;
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- if ((master = open(line, O_RDWR, 0)) == -1) {
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- if (errno == ENOENT)
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- break; /* try the next pty group */
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- } else {
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- line[5] = 't';
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- (void) chown(line, getuid(), ttygid);
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- (void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
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- (void) revoke(line);
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- if ((slave = open(line, O_RDWR, 0)) != -1) {
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- *amaster = master;
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- *aslave = slave;
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- if (name)
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- strcpy(name, line);
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- if (termp)
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- (void) tcsetattr(slave,
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- TCSAFLUSH, termp);
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- if (winp)
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- (void) ioctl(slave, TIOCSWINSZ,
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- (char *)winp);
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- return (0);
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- }
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- (void) close(master);
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- }
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- }
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+ const char *slavename;
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+ int master, slave;
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+
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+ master = posix_openpt(O_RDWR);
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+ if (master == -1)
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+ return (-1);
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+
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+ if (grantpt(master) == -1) {
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+ close(master);
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+ return (-1);
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+ }
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+
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+ slavename = ptsname(master);
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+ if (slavename == NULL) {
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+ close(master);
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+ return (-1);
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+ }
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+
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+ if (revoke(slavename) == -1) {
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+ close(master);
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+ return (-1);
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}
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- errno = ENOENT; /* out of ptys */
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- return (-1);
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+
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+ slave = open(slavename, O_RDWR);
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+ if (slave == -1) {
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+ close(master);
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+ return (-1);
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+ }
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+
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+ if (unlockpt(master) == -1) {
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+ close(master);
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+ close(slave);
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+ return (-1);
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+ }
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+
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+ *amaster = master;
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+ *aslave = slave;
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+
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+ if (name)
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+ strcpy(name, slavename);
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+ if (termp)
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+ tcsetattr(slave, TCSAFLUSH, termp);
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+ if (winp)
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+ ioctl(slave, TIOCSWINSZ, (char *)winp);
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+
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+ return (0);
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}
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int
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