diff options
Diffstat (limited to 'sysdeps/unix/bsd/getpt.c')
-rw-r--r-- | sysdeps/unix/bsd/getpt.c | 74 |
1 files changed, 49 insertions, 25 deletions
diff --git a/sysdeps/unix/bsd/getpt.c b/sysdeps/unix/bsd/getpt.c index 3bc34b1814..ec339c8335 100644 --- a/sysdeps/unix/bsd/getpt.c +++ b/sysdeps/unix/bsd/getpt.c @@ -17,43 +17,67 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <sys/types.h> -#include <fcntl.h> #include <errno.h> -#include <stdlib.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> + + +/* Prefix for master pseudo terminal nodes. */ +#define _PATH_PTY "/dev/pty" -#include "pty-internal.h" -/* Per the FreeBSD-3.0 manpages: pty masters are named - /dev/pty[p-sP-S][0-9a-v]. I hope EIO is the right - errno in the "already open" case; it doesn't say. */ -static const char pn1[] = "pqrsPQRS"; -static const char pn2[] = "0123456789abcdefghijklmnopqrstuv"; +/* Letters indicating a series of pseudo terminals. */ +#ifndef PTYNAME1 +#define PTYNAME1 "pqrsPQRS" +#endif +const char *__libc_ptyname1 = PTYNAME1; -/* Open the master side of a pseudoterminal and return its file - descriptor, or -1 on error. BSD version. */ +/* Letters indicating the position within a series. */ +#ifndef PTYNAME2 +#define PTYNAME2 "0123456789abcdefghijklmnopqrstuv"; +#endif +const char *__libc_ptyname2 = PTYNAME2; + + +/* Open a master pseudo terminal and return its file descriptor. */ int -__getpt () +__getpt (void) { - int fd; - const char *i, *j; - char namebuf[PTYNAMELEN]; + char buf[sizeof (_PATH_PTY) + 2]; + const char *p, *q; + char *s; + + s = __stpcpy (buf, _PATH_PTY); + s[0] = '?'; + s[1] = '?'; + s[2] = 0; - strcpy (namebuf, "/dev/pty"); - namebuf[10] = '\0'; - for (i = pn1; *i; ++i) + for (p = __libc_ptyname1; *p; p++) { - namebuf[8] = *i; - for (j = pn2; *j; ++j) - { - namebuf[9] = *j; - fd = open (namebuf, O_RDWR); + s[0] = *p; + + for (q = __libc_ptyname2; *q; q++) + { + int fd; + + s[1] = *q; + + fd = __open (buf, O_RDWR); if (fd != -1) - return fd; + { + if (__isatty (fd)) + return fd; + + __close (fd); + continue; + } + if (errno != EIO) return -1; - } + } } + __set_errno (ENFILE); return -1; } |