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628 lines
20 KiB
C
628 lines
20 KiB
C
/* source: xio-progcall.c */
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/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* this file contains common code dealing with program calls (exec, system) */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xio-process.h"
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#include "xio-named.h"
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#include "xio-progcall.h"
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#include "xio-socket.h"
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/* these options are used by address pty too */
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#if HAVE_OPENPTY
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const struct optdesc opt_openpty = { "openpty", NULL, OPT_OPENPTY, GROUP_PTY, PH_BIGEN, TYPE_BOOL, OFUNC_SPEC };
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#endif /* HAVE_OPENPTY */
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#if HAVE_DEV_PTMX || HAVE_DEV_PTC
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const struct optdesc opt_ptmx = { "ptmx", NULL, OPT_PTMX, GROUP_PTY, PH_BIGEN, TYPE_BOOL, OFUNC_SPEC };
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#endif
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const struct optdesc opt_sitout_eio = { "sitout-eio", NULL, OPT_SITOUT_EIO, GROUP_PTY, PH_OFFSET, TYPE_TIMEVAL, OFUNC_OFFSET, XIO_OFFSETOF(para.exec.sitout_eio), XIO_SIZEOF(para.exec.sitout_eio) };
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#if WITH_EXEC || WITH_SYSTEM
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#define MAXPTYNAMELEN 64
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const struct optdesc opt_fdin = { "fdin", NULL, OPT_FDIN, GROUP_FORK, PH_PASTBIGEN, TYPE_USHORT, OFUNC_SPEC };
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const struct optdesc opt_fdout = { "fdout", NULL, OPT_FDOUT, GROUP_FORK, PH_PASTBIGEN, TYPE_USHORT, OFUNC_SPEC };
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const struct optdesc opt_path = { "path", NULL, OPT_PATH, GROUP_EXEC, PH_PREEXEC, TYPE_STRING, OFUNC_SPEC };
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const struct optdesc opt_pipes = { "pipes", NULL, OPT_PIPES, GROUP_FORK, PH_BIGEN, TYPE_BOOL, OFUNC_SPEC };
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#if HAVE_PTY
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const struct optdesc opt_pty = { "pty", NULL, OPT_PTY, GROUP_FORK, PH_BIGEN, TYPE_BOOL, OFUNC_SPEC };
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#endif
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const struct optdesc opt_stderr = { "stderr", NULL, OPT_STDERR, GROUP_FORK, PH_PASTFORK, TYPE_BOOL, OFUNC_SPEC };
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const struct optdesc opt_nofork = { "nofork", NULL, OPT_NOFORK, GROUP_FORK, PH_BIGEN, TYPE_BOOL, OFUNC_SPEC };
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const struct optdesc opt_sighup = { "sighup", NULL, OPT_SIGHUP, GROUP_PARENT, PH_LATE, TYPE_CONST, OFUNC_SIGNAL, SIGHUP };
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const struct optdesc opt_sigint = { "sigint", NULL, OPT_SIGINT, GROUP_PARENT, PH_LATE, TYPE_CONST, OFUNC_SIGNAL, SIGINT };
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const struct optdesc opt_sigquit = { "sigquit", NULL, OPT_SIGQUIT, GROUP_PARENT, PH_LATE, TYPE_CONST, OFUNC_SIGNAL, SIGQUIT };
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/* fork for exec/system, but return before exec'ing.
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return=0: is child process
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return>0: is parent process
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return<0: error occurred, assume parent process and no child exists !!!
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*/
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int _xioopen_foxec(int xioflags, /* XIO_RDONLY etc. */
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struct single *sfd,
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groups_t groups,
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struct opt **optsp, /* in: opts; out: opts for parent/child */
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int *duptostderr /* out: redirect stderr to output fd */
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) {
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struct opt *opts; /* common options */
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struct opt *popts; /* parent options */
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struct opt *copts; /* child options */
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int numleft;
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int d, sv[2], rdpip[2], wrpip[2];
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int rw = (xioflags & XIO_ACCMODE);
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bool usepipes = false;
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#if HAVE_PTY
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int ptyfd = -1, ttyfd = -1;
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bool usebestpty = false; /* use the best available way to open pty */
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#if defined(HAVE_DEV_PTMX) || defined(HAVE_DEV_PTC)
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bool useptmx = false; /* use /dev/ptmx or equivalent */
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#endif
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#if HAVE_OPENPTY
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bool useopenpty = false; /* try only openpty */
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#endif /* HAVE_OPENPTY */
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bool usepty = false; /* any of the pty options is selected */
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char ptyname[MAXPTYNAMELEN];
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#endif /* HAVE_PTY */
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pid_t pid = 0; /* mostly int */
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short fdi = 0, fdo = 1;
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short result;
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bool withstderr = false;
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bool nofork = false;
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bool withfork;
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char *tn = NULL;
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int trigger[2]; /* [0] watched by parent, [1] closed by child when ready */
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opts = *optsp;
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if (applyopts_single(sfd, opts, PH_INIT) < 0) return -1;
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applyopts2(sfd, -1, opts, PH_INIT, PH_EARLY);
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retropt_bool(opts, OPT_NOFORK, &nofork);
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withfork = !nofork;
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retropt_bool(opts, OPT_PIPES, &usepipes);
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#if HAVE_PTY
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retropt_bool(opts, OPT_PTY, &usebestpty);
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#if HAVE_OPENPTY
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retropt_bool(opts, OPT_OPENPTY, &useopenpty);
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#endif
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#if defined(HAVE_DEV_PTMX) || defined(HAVE_DEV_PTC)
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retropt_bool(opts, OPT_PTMX, &useptmx);
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#endif
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usepty = (usebestpty
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#if HAVE_OPENPTY
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|| useopenpty
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#endif
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#if defined(HAVE_DEV_PTMX) || defined(HAVE_DEV_PTC)
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|| useptmx
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#endif
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);
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if (usepipes && usepty) {
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Warn("_xioopen_foxec(): options \"pipes\" and \"pty\" must not be specified together; ignoring \"pipes\"");
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usepipes = false;
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}
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#endif /* HAVE_PTY */
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if (retropt_ushort(opts, OPT_FDIN, (unsigned short *)&fdi) >= 0) {
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if ((xioflags&XIO_ACCMODE) == XIO_RDONLY) {
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Error("_xioopen_foxec(): option fdin is useless in read-only mode");
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}
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}
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if (retropt_ushort(opts, OPT_FDOUT, (unsigned short *)&fdo) >= 0) {
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if ((xioflags&XIO_ACCMODE) == XIO_WRONLY) {
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Error("_xioopen_foxec(): option fdout is useless in write-only mode");
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}
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}
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if (withfork) {
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if (!(xioflags&XIO_MAYCHILD)) {
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Error("cannot fork off child process here");
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/*!! free something */
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return -1;
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}
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sfd->flags |= XIO_DOESCHILD;
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#if HAVE_PTY
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Notice2("forking off child, using %s for %s",
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&("socket\0\0pipes\0\0\0pty\0\0\0\0\0"[(usepipes<<3)|(usepty<<4)]),
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ddirection[rw]);
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#else
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Notice2("forking off child, using %s for %s",
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&("socket\0\0pipes\0\0\0"[(usepipes<<3)]),
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ddirection[rw]);
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#endif /* HAVE_PTY */
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}
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applyopts(sfd, -1, opts, PH_PREBIGEN);
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if (!withfork) {
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/*0 struct single *stream1, *stream2;*/
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if (!(xioflags & XIO_MAYEXEC /* means exec+nofork */)) {
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Error("option nofork is not allowed here");
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/*!! free something */
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return -1;
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}
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sfd->flags |= XIO_DOESEXEC;
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/* Only one process, no parent,child */
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if ((copts = moveopts(opts, GROUP_ALL)) == NULL) {
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/*!! free something */
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return -1;
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}
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#if 0 /*!! */
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if (sock1->tag == XIO_TAG_DUAL) {
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stream1 = &sock1->dual.stream[0]->stream;
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stream2 = &sock1->dual.stream[1]->stream;
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} else {
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stream1 = &sock1->stream;
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stream2 = &sock1->stream;
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}
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if (stream1->dtype == DATA_READLINE || stream2->dtype == DATA_READLINE ||
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stream1->dtype == DATA_OPENSSL || stream2->dtype == DATA_OPENSSL
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) {
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Error("with option nofork, openssl and readline in address1 do not work");
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}
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if (stream1->lineterm != LINETERM_RAW ||
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stream2->lineterm != LINETERM_RAW ||
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stream1->ignoreeof || stream2->ignoreeof) {
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Warn("due to option nofork, address1 options for lineterm and igoreeof do not apply");
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}
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#endif
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/* remember: fdin is the fd where the sub program reads from, thus it is
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sock0[]'s read fd */
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/*! problem: when fdi==WRFD(sock[0]) or fdo==RDFD(sock[0]) */
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if (rw != XIO_WRONLY) {
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if (XIO_GETWRFD(sock[0]/*!!*/) == fdo) {
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if (Fcntl_l(fdo, F_SETFD, 0) < 0) {
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Warn2("fcntl(%d, F_SETFD, 0): %s", fdo, strerror(errno));
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}
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} else {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdo);
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if (Dup2(XIO_GETWRFD(sock[0]), fdo) < 0) {
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Error3("dup2(%d, %d): %s",
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XIO_GETWRFD(sock[0]), fdo, strerror(errno));
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}
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}
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/*0 Info2("dup2(%d, %d)", XIO_GETRDFD(sock[0]), fdi);*/
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}
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if (rw != XIO_RDONLY) {
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if (XIO_GETRDFD(sock[0]) == fdi) {
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if (Fcntl_l(fdi, F_SETFD, 0) < 0) {
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Warn2("fcntl(%d, F_SETFD, 0): %s", fdi, strerror(errno));
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}
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} else {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdi);
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if (Dup2(XIO_GETRDFD(sock[0]), fdi) < 0) {
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Error3("dup2(%d, %d): %s)",
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XIO_GETRDFD(sock[0]), fdi, strerror(errno));
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}
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/*0 Info2("dup2(%d, %d)", XIO_GETWRFD(sock[0]), fdo);*/
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}
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}
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/* !withfork */
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} else /* withfork */
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#if HAVE_PTY
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if (usepty) {
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#if defined(HAVE_DEV_PTMX)
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# define PTMX "/dev/ptmx" /* Linux */
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#elif HAVE_DEV_PTC
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# define PTMX "/dev/ptc" /* AIX 4.3.3 */
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#endif
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sfd->dtype = XIODATA_PTY;
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#if HAVE_DEV_PTMX || HAVE_DEV_PTC
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if (usebestpty || useptmx) {
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if ((ptyfd = Open(PTMX, O_RDWR|O_NOCTTY, 0620)) < 0) {
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Warn1("open(\""PTMX"\", O_RDWR|O_NOCTTY, 0620): %s",
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strerror(errno));
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/*!*/
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} else {
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/*0 Info2("open(\"%s\", O_RDWR|O_NOCTTY, 0620) -> %d", PTMX, ptyfd);*/
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}
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if (ptyfd >= 0 && ttyfd < 0) {
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/* we used PTMX before forking */
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extern char *ptsname(int);
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#if HAVE_PROTOTYPE_LIB_ptsname /* AIX, not Linux */
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if ((tn = Ptsname(ptyfd)) == NULL) {
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Warn2("ptsname(%d): %s", ptyfd, strerror(errno));
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}
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#endif /* HAVE_PROTOTYPE_LIB_ptsname */
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if (tn == NULL) {
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if ((tn = Ttyname(ptyfd)) == NULL) {
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Error2("ttyname(%d): %s", ptyfd, strerror(errno));
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}
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}
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ptyname[0] = '\0'; strncat(ptyname, tn, MAXPTYNAMELEN-1);
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#if HAVE_GRANTPT /* AIX, not Linux */
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if (Grantpt(ptyfd)/*!*/ < 0) {
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Warn2("grantpt(%d): %s", ptyfd, strerror(errno));
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}
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#endif /* HAVE_GRANTPT */
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#if HAVE_UNLOCKPT
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if (Unlockpt(ptyfd)/*!*/ < 0) {
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Warn2("unlockpt(%d): %s", ptyfd, strerror(errno));
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}
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#endif /* HAVE_UNLOCKPT */
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}
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}
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#endif /* HAVE_DEV_PTMX || HAVE_DEV_PTC */
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#if HAVE_OPENPTY
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if (ptyfd < 0) {
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int result;
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if ((result = Openpty(&ptyfd, &ttyfd, ptyname, NULL, NULL)) < 0) {
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Error4("openpty(%p, %p, %p, NULL, NULL): %s",
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&ptyfd, &ttyfd, ptyname, strerror(errno));
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return -1;
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}
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}
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#endif /* HAVE_OPENPTY */
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/* withfork use_pty */
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if ((copts = moveopts(opts, GROUP_TERMIOS|GROUP_FORK|GROUP_EXEC|GROUP_PROCESS|GROUP_NAMED)) == NULL) {
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return -1;
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}
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popts = opts;
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applyopts_cloexec(ptyfd, popts);/*!*/
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/* exec:...,pty did not kill child process under some circumstances */
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if (sfd->howtoend == END_UNSPEC) {
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sfd->howtoend = END_CLOSE_KILL;
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}
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/* this for parent, was after fork */
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applyopts(sfd, ptyfd, popts, PH_FD);
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sfd->fd = ptyfd;
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/* end withfork, use_pty */
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} else /* end withfork, use_pty */
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#endif /* HAVE_PTY */
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if (usepipes) {
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/* withfork usepipes */
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if (rw == XIO_RDWR)
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sfd->dtype = XIODATA_2PIPE;
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if (rw != XIO_WRONLY) {
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if (Pipe(rdpip) < 0) {
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Error2("pipe(%p): %s", rdpip, strerror(errno));
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return -1;
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}
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}
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/*0 Info2("pipe({%d,%d})", rdpip[0], rdpip[1]);*/
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/* rdpip[0]: read by socat; rdpip[1]: write by child */
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/* withfork usepipes */
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if ((copts = moveopts(opts, GROUP_FORK|GROUP_EXEC|GROUP_PROCESS))
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== NULL) {
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return -1;
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}
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popts = opts;
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if (rw != XIO_WRONLY) {
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applyopts_cloexec(rdpip[0], popts);
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applyopts(sfd, rdpip[0], popts, PH_FD);
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applyopts(sfd, rdpip[1], copts, PH_FD);
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}
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if (rw != XIO_RDONLY) {
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if (Pipe(wrpip) < 0) {
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Error2("pipe(%p): %s", wrpip, strerror(errno));
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return -1;
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}
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}
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/* wrpip[1]: write by socat; wrpip[0]: read by child */
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if (rw != XIO_RDONLY) {
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applyopts_cloexec(wrpip[1], popts);
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applyopts(sfd, wrpip[1], popts, PH_FD);
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applyopts(sfd, wrpip[0], copts, PH_FD);
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}
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if (sfd->howtoend == END_UNSPEC) {
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sfd->howtoend = END_CLOSE_KILL;
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}
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/* this for parent, was after fork */
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switch (rw) {
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case XIO_RDONLY: sfd->fd = rdpip[0]; break;
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case XIO_WRONLY: sfd->fd = wrpip[1]; break;
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case XIO_RDWR: sfd->fd = rdpip[0];
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sfd->para.exec.fdout = wrpip[1];
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break;
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}
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applyopts(sfd, -1, popts, PH_FD);
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applyopts(sfd, -1, popts, PH_LATE);
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if (applyopts_single(sfd, popts, PH_LATE) < 0)
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return -1;
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/* end withfork, use_pipes */
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} else {
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/* withfork, socketpair */
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d = AF_UNIX;
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retropt_int(opts, OPT_PROTOCOL_FAMILY, &d);
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result = xiosocketpair(opts, d, SOCK_STREAM, 0, sv);
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if (result < 0) {
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return -1;
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}
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/* withfork socketpair */
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if ((copts = moveopts(opts, GROUP_FORK|GROUP_EXEC|GROUP_PROCESS)) == NULL) {
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return -1;
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}
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popts = opts;
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applyopts(sfd, sv[0], copts, PH_PASTSOCKET);
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applyopts(sfd, sv[1], popts, PH_PASTSOCKET);
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applyopts_cloexec(sv[0], copts);
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applyopts(sfd, sv[0], copts, PH_FD);
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applyopts(sfd, sv[1], popts, PH_FD);
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applyopts(sfd, sv[0], copts, PH_PREBIND);
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applyopts(sfd, sv[0], copts, PH_BIND);
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applyopts(sfd, sv[0], copts, PH_PASTBIND);
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applyopts(sfd, sv[1], popts, PH_PREBIND);
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applyopts(sfd, sv[1], popts, PH_BIND);
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applyopts(sfd, sv[1], popts, PH_PASTBIND);
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if (sfd->howtoend == END_UNSPEC) {
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sfd->howtoend = END_SHUTDOWN_KILL;
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}
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/* this for parent, was after fork */
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sfd->fd = sv[0];
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applyopts(sfd, -1, popts, PH_FD);
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/* end withfork, socketpair */
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}
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retropt_bool(copts, OPT_STDERR, &withstderr);
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xiosetchilddied(); /* set SIGCHLD handler */
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if (withfork) {
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Socketpair(PF_UNIX, SOCK_STREAM, 0, trigger);
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pid = xio_fork(true, E_ERROR, 0);
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if (pid < 0) {
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return -1;
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}
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}
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if (!withfork || pid == 0) { /* in single process, or in child */
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applyopts_optgroup(sfd, -1, copts, GROUP_PROCESS);
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if (withfork) {
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Close(trigger[0]); /* in child: not needed here */
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/* The child should have default handling for SIGCHLD. */
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/* In particular, it's not defined whether ignoring SIGCHLD is inheritable. */
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if (Signal(SIGCHLD, SIG_DFL) == SIG_ERR) {
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Warn1("signal(SIGCHLD, SIG_DFL): %s", strerror(errno));
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}
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#if HAVE_PTY
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if (usepty) {
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applyopts_named(tn, copts, PH_PREOPEN);
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applyopts_named(tn, copts, PH_EARLY);
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applyopts_named(tn, copts, PH_FD);
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if (ttyfd < 0) {
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if ((ttyfd = Open(tn, O_RDWR|O_NOCTTY, 0620)) < 0) {
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Warn2("open(\"%s\", O_RDWR|O_NOCTTY, 0620): %s", tn, strerror(errno));
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} else {
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/*0 Info2("open(\"%s\", O_RDWR|O_NOCTTY, 0620) -> %d", tn, ttyfd);*/
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}
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} else {
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if ((tn = Ttyname(ttyfd)) == NULL) {
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Warn2("ttyname(%d): %s", ttyfd, strerror(errno));
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}
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}
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#ifdef I_PUSH
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/* Linux: I_PUSH def'd; pty: ioctl(, I_FIND, ...) -> -1 EINVAL */
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/* AIX: I_PUSH def'd; pty: ioctl(, I_FIND, ...) -> 1 */
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/* SunOS: I_PUSH def'd; pty: ioctl(, I_FIND, ...) -> 0 */
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/* HP-UX: I_PUSH def'd; pty: ioctl(, I_FIND, ...) -> 0 */
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if (Ioctl(ttyfd, I_FIND, "ldterm\0") == 0) {
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Ioctl(ttyfd, I_PUSH, "ptem\0\0\0"); /* 0 */ /* padding for AdressSanitizer */
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Ioctl(ttyfd, I_PUSH, "ldterm\0"); /* 0 */
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Ioctl(ttyfd, I_PUSH, "ttcompat"); /* HP-UX: -1 */
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}
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#endif
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/* this for child, was after fork */
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applyopts(sfd, ttyfd, copts, PH_FD);
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Info1("opened pseudo terminal %s", tn);
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Close(ptyfd);
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if (rw != XIO_RDONLY && fdi != ttyfd) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdi);
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if (Dup2(ttyfd, fdi) < 0) {
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Error3("dup2(%d, %d): %s", ttyfd, fdi, strerror(errno));
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return -1; }
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/*0 Info2("dup2(%d, %d)", ttyfd, fdi);*/
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}
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if (rw != XIO_WRONLY && fdo != ttyfd) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdo);
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if (Dup2(ttyfd, fdo) < 0) {
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Error3("dup2(%d, %d): %s", ttyfd, fdo, strerror(errno));
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return -1; }
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/*0 Info2("dup2(%d, %d)", ttyfd, fdo);*/
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}
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if ((rw == XIO_RDONLY || fdi != ttyfd) &&
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(rw == XIO_WRONLY || fdo != ttyfd)) {
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applyopts_cloexec(ttyfd, copts);
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}
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applyopts(sfd, ttyfd, copts, PH_LATE);
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applyopts(sfd, ttyfd, copts, PH_LATE2);
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} else
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#endif /* HAVE_PTY */
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if (usepipes) {
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/* we might have a temporary conflict between what FDs are
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currently allocated, and which are to be used. We try to find
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a graceful solution via temporary descriptors */
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int tmpi, tmpo;
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if (rw != XIO_WRONLY) Close(rdpip[0]);
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if (rw != XIO_RDONLY) Close(wrpip[1]);
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if (fdi == rdpip[1]) { /* a conflict here */
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if ((tmpi = Dup(wrpip[0])) < 0) {
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Error2("dup(%d): %s", wrpip[0], strerror(errno));
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return -1;
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}
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/*0 Info2("dup(%d) -> %d", wrpip[0], tmpi);*/
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rdpip[1] = tmpi;
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}
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if (fdo == wrpip[0]) { /* a conflict here */
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if ((tmpo = Dup(rdpip[1])) < 0) {
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Error2("dup(%d): %s", rdpip[1], strerror(errno));
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return -1;
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}
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/*0 Info2("dup(%d) -> %d", rdpip[1], tmpo);*/
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wrpip[0] = tmpo;
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}
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if (rw != XIO_WRONLY && rdpip[1] != fdo) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdo);
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if (Dup2(rdpip[1], fdo) < 0) {
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Error3("dup2(%d, %d): %s", rdpip[1], fdo, strerror(errno));
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return -1;
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}
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Close(rdpip[1]);
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}
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if (rw != XIO_RDONLY && wrpip[0] != fdi) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdi);
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if (Dup2(wrpip[0], fdi) < 0) {
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Error3("dup2(%d, %d): %s", wrpip[0], fdi, strerror(errno));
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return -1;
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}
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Close(wrpip[0]);
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/* applyopts_cloexec(fdi, *copts);*/ /* option is already consumed! */
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}
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applyopts(sfd, fdi, copts, PH_LATE);
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applyopts(sfd, fdo, copts, PH_LATE);
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applyopts(sfd, fdi, copts, PH_LATE2);
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applyopts(sfd, fdo, copts, PH_LATE2);
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} else { /* socketpair */
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Close(sv[0]);
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if (rw != XIO_RDONLY && fdi != sv[1]) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdi);
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if (Dup2(sv[1], fdi) < 0) {
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Error3("dup2(%d, %d): %s", sv[1], fdi, strerror(errno));
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return -1; }
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/*0 Info2("dup2(%d, %d)", sv[1], fdi);*/
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}
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if (rw != XIO_WRONLY && fdo != sv[1]) {
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/* make sure that the internal diagnostic socket pair fds do not conflict
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with our choices */
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diag_reserve_fd(fdo);
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if (Dup2(sv[1], fdo) < 0) {
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Error3("dup2(%d, %d): %s", sv[1], fdo, strerror(errno));
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return -1; }
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/*0 Info2("dup2(%d, %d)", sv[1], fdo);*/
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}
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if (fdi != sv[1] && fdo != sv[1]) {
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applyopts_cloexec(sv[1], copts);
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Close(sv[1]);
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}
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applyopts(sfd, fdi, copts, PH_LATE);
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applyopts(sfd, fdi, copts, PH_LATE2);
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}
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if (withfork) {
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Info("notifying parent that child process is ready");
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Close(trigger[1]); /* in child, notify parent that ready */
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}
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} /* withfork */
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else {
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applyopts(sfd, -1, copts, PH_LATE);
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applyopts(sfd, -1, copts, PH_LATE2);
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}
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_xioopen_setdelayeduser();
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if (withstderr) {
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*duptostderr = fdo;
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} else {
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*duptostderr = -1;
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}
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*optsp = copts;
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return 0; /* indicate child process */
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}
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/* for parent (this is our socat process) */
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Notice1("forked off child process "F_pid, pid);
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Close(trigger[1]); /* in parent */
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#if HAVE_PTY
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if (usepty) {
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# if 0
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if (Close(ttyfd) < 0) {
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Info2("close(%d): %s", ttyfd, strerror(errno));
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}
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# endif
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} else
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#endif /* HAVE_PTY */
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if (usepipes) {
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if (rw == XIO_RDONLY) Close(rdpip[1]);
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if (rw == XIO_WRONLY) Close(wrpip[0]);
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} else {
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Close(sv[1]);
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}
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sfd->para.exec.pid = pid;
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if (applyopts_single(sfd, popts, PH_LATE) < 0) return -1;
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applyopts(sfd, -1, popts, PH_LATE);
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applyopts(sfd, -1, popts, PH_LATE2);
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applyopts(sfd, -1, popts, PH_PASTEXEC);
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if ((numleft = leftopts(popts)) > 0) {
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showleft(popts);
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Error1("INTERNAL: %d option(s) remained unused", numleft);
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return STAT_NORETRY;
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}
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{
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struct pollfd fds[1];
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fds[0].fd = trigger[0];
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fds[0].events = POLLIN|POLLHUP;
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Poll(fds, 1, -1);
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Info("child process notified parent that it is ready");
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}
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applyopts(sfd, ptyfd, popts, PH_LATE);
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if (applyopts_single(sfd, popts, PH_LATE) < 0)
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return -1;
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*optsp = popts;
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return pid; /* indicate parent (main) process */
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}
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#endif /* WITH_EXEC || WITH_SYSTEM */
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int setopt_path(struct opt *opts, char **path) {
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if (retropt_string(opts, OPT_PATH, path) >= 0) {
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if (setenv("PATH", *path, 1) < 0) {
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Error1("setenv(\"PATH\", \"%s\", 1): insufficient space", *path);
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return -1;
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}
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}
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return 0;
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}
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