mirror of
https://github.com/moparisthebest/socat
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79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* source: xio-fdnum.c */
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/* Copyright Gerhard Rieger 2001-2006 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* this file contains the source for opening addresses of fdnum type */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xio-fdnum.h"
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#if WITH_FDNUM
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static int xioopen_fdnum(int argc, const char *argv[], struct opt *opts, int rw, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3);
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const struct addrdesc addr_fd = { "fd", 3, xioopen_fdnum, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(":<num>") };
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/* use some file descriptor and apply the options. Set the FD_CLOEXEC flag. */
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static int xioopen_fdnum(int argc, const char *argv[], struct opt *opts,
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int xioflags, xiofile_t *xfd, unsigned groups,
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int dummy1, int dummy2, int dummy3) {
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char *a1;
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int rw = (xioflags&XIO_ACCMODE);
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int numfd;
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int result;
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if (argc != 2) {
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Error3("%s:%s: wrong number of parameters (%d instead of 1)", argv[0], argv[1], argc-1);
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}
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numfd = strtoul(argv[1], &a1, 0);
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if (*a1 != '\0') {
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Error1("error in FD number \"%s\"", argv[1]);
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}
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/* we dont want to see these fds in child processes */
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if (Fcntl_l(numfd, F_SETFD, FD_CLOEXEC) < 0) {
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Warn2("fcntl(%d, F_SETFD, FD_CLOEXEC): %s", numfd, strerror(errno));
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}
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Notice2("using file descriptor %d for %s", numfd, ddirection[rw]);
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if ((result = xioopen_fd(opts, rw, &xfd->stream, numfd, dummy2, dummy3)) < 0) {
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return result;
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}
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return 0;
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}
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#endif /* WITH_FDNUM */
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#if WITH_FD
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/* retrieve and apply options to a standard file descriptor.
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Do not set FD_CLOEXEC flag. */
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int xioopen_fd(struct opt *opts, int rw, xiosingle_t *xfd, int numfd, int dummy2, int dummy3) {
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xfd->fd = numfd;
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xfd->howtoend = END_NONE;
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#if WITH_TERMIOS
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if (Isatty(xfd->fd)) {
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if (Tcgetattr(xfd->fd, &xfd->savetty) < 0) {
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Warn2("cannot query current terminal settings on fd %d: %s",
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xfd->fd, strerror(errno));
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} else {
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xfd->ttyvalid = true;
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}
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}
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#endif /* WITH_TERMIOS */
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
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applyopts(-1, opts, PH_INIT);
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applyopts2(xfd->fd, opts, PH_INIT, PH_FD);
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return _xio_openlate(xfd, opts);
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}
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#endif /* WITH_FD */
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