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-rw-r--r--sysdeps/posix/spawni.c319
1 files changed, 0 insertions, 319 deletions
diff --git a/sysdeps/posix/spawni.c b/sysdeps/posix/spawni.c
deleted file mode 100644
index 9cad25ca4e..0000000000
--- a/sysdeps/posix/spawni.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/* Guts of POSIX spawn interface. Generic POSIX.1 version.
- Copyright (C) 2000-2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <spawn.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <sys/resource.h>
-#include "spawn_int.h"
-#include <not-cancel.h>
-#include <local-setxid.h>
-#include <shlib-compat.h>
-
-
-/* The Unix standard contains a long explanation of the way to signal
- an error after the fork() was successful. Since no new wait status
- was wanted there is no way to signal an error using one of the
- available methods. The committee chose to signal an error by a
- normal program exit with the exit code 127. */
-#define SPAWN_ERROR 127
-
-
-/* The file is accessible but it is not an executable file. Invoke
- the shell to interpret it as a script. */
-static void
-internal_function
-script_execute (const char *file, char *const argv[], char *const envp[])
-{
- /* Count the arguments. */
- int argc = 0;
- while (argv[argc++])
- ;
-
- /* Construct an argument list for the shell. */
- {
- char *new_argv[argc + 1];
- new_argv[0] = (char *) _PATH_BSHELL;
- new_argv[1] = (char *) file;
- while (argc > 1)
- {
- new_argv[argc] = argv[argc - 1];
- --argc;
- }
-
- /* Execute the shell. */
- __execve (new_argv[0], new_argv, envp);
- }
-}
-
-static inline void
-maybe_script_execute (const char *file, char *const argv[], char *const envp[],
- int xflags)
-{
- if (SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_15)
- && (xflags & SPAWN_XFLAGS_TRY_SHELL)
- && errno == ENOEXEC)
- script_execute (file, argv, envp);
-}
-
-/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
- Before running the process perform the actions described in FILE-ACTIONS. */
-int
-__spawni (pid_t *pid, const char *file,
- const posix_spawn_file_actions_t *file_actions,
- const posix_spawnattr_t *attrp, char *const argv[],
- char *const envp[], int xflags)
-{
- pid_t new_pid;
- char *path, *p, *name;
- size_t len;
- size_t pathlen;
-
- /* Do this once. */
- short int flags = attrp == NULL ? 0 : attrp->__flags;
-
- /* Generate the new process. */
- if ((flags & POSIX_SPAWN_USEVFORK) != 0
- /* If no major work is done, allow using vfork. Note that we
- might perform the path searching. But this would be done by
- a call to execvp(), too, and such a call must be OK according
- to POSIX. */
- || ((flags & (POSIX_SPAWN_SETSIGMASK | POSIX_SPAWN_SETSIGDEF
- | POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER
- | POSIX_SPAWN_SETPGROUP | POSIX_SPAWN_RESETIDS
- | POSIX_SPAWN_SETSID)) == 0
- && file_actions == NULL))
- new_pid = __vfork ();
- else
- new_pid = __fork ();
-
- if (new_pid != 0)
- {
- if (new_pid < 0)
- return errno;
-
- /* The call was successful. Store the PID if necessary. */
- if (pid != NULL)
- *pid = new_pid;
-
- return 0;
- }
-
- /* Set signal mask. */
- if ((flags & POSIX_SPAWN_SETSIGMASK) != 0
- && __sigprocmask (SIG_SETMASK, &attrp->__ss, NULL) != 0)
- _exit (SPAWN_ERROR);
-
- /* Set signal default action. */
- if ((flags & POSIX_SPAWN_SETSIGDEF) != 0)
- {
- /* We have to iterate over all signals. This could possibly be
- done better but it requires system specific solutions since
- the sigset_t data type can be very different on different
- architectures. */
- int sig;
- struct sigaction sa;
-
- memset (&sa, '\0', sizeof (sa));
- sa.sa_handler = SIG_DFL;
-
- for (sig = 1; sig <= _NSIG; ++sig)
- if (__sigismember (&attrp->__sd, sig) != 0
- && __sigaction (sig, &sa, NULL) != 0)
- _exit (SPAWN_ERROR);
-
- }
-
-#ifdef _POSIX_PRIORITY_SCHEDULING
- /* Set the scheduling algorithm and parameters. */
- if ((flags & (POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER))
- == POSIX_SPAWN_SETSCHEDPARAM)
- {
- if (__sched_setparam (0, &attrp->__sp) == -1)
- _exit (SPAWN_ERROR);
- }
- else if ((flags & POSIX_SPAWN_SETSCHEDULER) != 0)
- {
- if (__sched_setscheduler (0, attrp->__policy, &attrp->__sp) == -1)
- _exit (SPAWN_ERROR);
- }
-#endif
-
- if ((flags & POSIX_SPAWN_SETSID) != 0
- && __setsid () < 0)
- _exit (SPAWN_ERROR);
-
- /* Set the process group ID. */
- if ((flags & POSIX_SPAWN_SETPGROUP) != 0
- && __setpgid (0, attrp->__pgrp) != 0)
- _exit (SPAWN_ERROR);
-
- /* Set the effective user and group IDs. */
- if ((flags & POSIX_SPAWN_RESETIDS) != 0
- && (local_seteuid (__getuid ()) != 0
- || local_setegid (__getgid ()) != 0))
- _exit (SPAWN_ERROR);
-
- /* Execute the file actions. */
- if (file_actions != NULL)
- {
- int cnt;
- struct rlimit64 fdlimit;
- bool have_fdlimit = false;
-
- for (cnt = 0; cnt < file_actions->__used; ++cnt)
- {
- struct __spawn_action *action = &file_actions->__actions[cnt];
-
- switch (action->tag)
- {
- case spawn_do_close:
- if (close_not_cancel (action->action.close_action.fd) != 0)
- {
- if (! have_fdlimit)
- {
- __getrlimit64 (RLIMIT_NOFILE, &fdlimit);
- have_fdlimit = true;
- }
-
- /* Only signal errors for file descriptors out of range. */
- if (action->action.close_action.fd < 0
- || action->action.close_action.fd >= fdlimit.rlim_cur)
- /* Signal the error. */
- _exit (SPAWN_ERROR);
- }
- break;
-
- case spawn_do_open:
- {
- int new_fd = open_not_cancel (action->action.open_action.path,
- action->action.open_action.oflag
- | O_LARGEFILE,
- action->action.open_action.mode);
-
- if (new_fd == -1)
- /* The `open' call failed. */
- _exit (SPAWN_ERROR);
-
- /* Make sure the desired file descriptor is used. */
- if (new_fd != action->action.open_action.fd)
- {
- if (__dup2 (new_fd, action->action.open_action.fd)
- != action->action.open_action.fd)
- /* The `dup2' call failed. */
- _exit (SPAWN_ERROR);
-
- if (close_not_cancel (new_fd) != 0)
- /* The `close' call failed. */
- _exit (SPAWN_ERROR);
- }
- }
- break;
-
- case spawn_do_dup2:
- if (__dup2 (action->action.dup2_action.fd,
- action->action.dup2_action.newfd)
- != action->action.dup2_action.newfd)
- /* The `dup2' call failed. */
- _exit (SPAWN_ERROR);
- break;
- }
- }
- }
-
- if ((xflags & SPAWN_XFLAGS_USE_PATH) == 0 || strchr (file, '/') != NULL)
- {
- /* The FILE parameter is actually a path. */
- __execve (file, argv, envp);
-
- maybe_script_execute (file, argv, envp, xflags);
-
- /* Oh, oh. `execve' returns. This is bad. */
- _exit (SPAWN_ERROR);
- }
-
- /* We have to search for FILE on the path. */
- path = getenv ("PATH");
- if (path == NULL)
- {
- /* There is no `PATH' in the environment.
- The default search path is the current directory
- followed by the path `confstr' returns for `_CS_PATH'. */
- len = confstr (_CS_PATH, (char *) NULL, 0);
- path = (char *) __alloca (1 + len);
- path[0] = ':';
- (void) confstr (_CS_PATH, path + 1, len);
- }
-
- len = strlen (file) + 1;
- pathlen = strlen (path);
- name = __alloca (pathlen + len + 1);
- /* Copy the file name at the top. */
- name = (char *) memcpy (name + pathlen + 1, file, len);
- /* And add the slash. */
- *--name = '/';
-
- p = path;
- do
- {
- char *startp;
-
- path = p;
- p = __strchrnul (path, ':');
-
- if (p == path)
- /* Two adjacent colons, or a colon at the beginning or the end
- of `PATH' means to search the current directory. */
- startp = name + 1;
- else
- startp = (char *) memcpy (name - (p - path), path, p - path);
-
- /* Try to execute this name. If it works, execv will not return. */
- __execve (startp, argv, envp);
-
- maybe_script_execute (startp, argv, envp, xflags);
-
- switch (errno)
- {
- case EACCES:
- case ENOENT:
- case ESTALE:
- case ENOTDIR:
- /* Those errors indicate the file is missing or not executable
- by us, in which case we want to just try the next path
- directory. */
- break;
-
- default:
- /* Some other error means we found an executable file, but
- something went wrong executing it; return the error to our
- caller. */
- _exit (SPAWN_ERROR);
- }
- }
- while (*p++ != '\0');
-
- /* Return with an error. */
- _exit (SPAWN_ERROR);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-25 21:47:12 +0000