diff options
Diffstat (limited to 'winsup/cygwin/spawn.cc')
| -rw-r--r-- | winsup/cygwin/spawn.cc | 980 |
1 files changed, 0 insertions, 980 deletions
diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc deleted file mode 100644 index 510031911..000000000 --- a/winsup/cygwin/spawn.cc +++ /dev/null @@ -1,980 +0,0 @@ -/* spawn.cc - - Copyright 1996, 1997, 1998, 1999, 2000 Cygnus Solutions. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include <stdlib.h> -#include <stdarg.h> -#include <unistd.h> -#include <process.h> -#include <sys/wait.h> -#include <errno.h> -#include <limits.h> -#include "winsup.h" -#include <ctype.h> -#include "paths.h" - -extern BOOL allow_ntsec; - -#define LINE_BUF_CHUNK (MAX_PATH * 2) - -suffix_info std_suffixes[] = -{ - suffix_info (".exe", 1), suffix_info ("", 1), - suffix_info (".com"), suffix_info (".cmd"), - suffix_info (".bat"), suffix_info (".dll"), - suffix_info (NULL) -}; - -/* Add .exe to PROG if not already present and see if that exists. - If not, return PROG (converted from posix to win32 rules if necessary). - The result is always BUF. - - Returns (possibly NULL) suffix */ - -static const char * -perhaps_suffix (const char *prog, char *buf) -{ - char *ext; - - debug_printf ("prog '%s'", prog); - path_conv temp (prog, SYMLINK_FOLLOW, 1, std_suffixes); - strcpy (buf, temp.get_win32 ()); - - if (temp.file_attributes () & FILE_ATTRIBUTE_DIRECTORY) - ext = NULL; - else if (temp.known_suffix) - ext = buf + (temp.known_suffix - temp.get_win32 ()); - else - ext = strchr (buf, '\0'); - - debug_printf ("buf %s, suffix found '%s'", buf, ext); - return ext; -} - -/* Find an executable name, possibly by appending known executable - suffixes to it. The win32-translated name is placed in 'buf'. - Any found suffix is returned in known_suffix. - - If the file is not found and !null_if_not_found then the win32 version - of name is placed in buf and returned. Otherwise the contents of buf - is undefined and NULL is returned. */ - -const char * __stdcall -find_exec (const char *name, char *buf, const char *mywinenv, - int null_if_notfound, const char **known_suffix) -{ - const char *suffix = ""; - debug_printf ("find_exec (%s)", name); - char *retval = buf; - - /* Check to see if file can be opened as is first. - Win32 systems always check . first, but PATH may not be set up to - do this. */ - if ((suffix = perhaps_suffix (name, buf)) != NULL) - goto out; - - win_env *winpath; - const char *path; - char tmp[MAX_PATH]; - - /* Return the error condition if this is an absolute path or if there - is no PATH to search. */ - if (strchr (name, '/') || strchr (name, '\\') || - isalpha (name[0]) && name[1] == ':' || - !(winpath = getwinenv (mywinenv)) || - !(path = winpath->get_native ()) || - *path == '\0') - goto errout; - - debug_printf ("%s%s", mywinenv, path); - - /* Iterate over the specified path, looking for the file with and - without executable extensions. */ - do - { - char *eotmp = strccpy (tmp, &path, ';'); - /* An empty path or '.' means the current directory, but we've - already tried that. */ - if (tmp[0] == '\0' || (tmp[0] == '.' && tmp[1] == '\0')) - continue; - - *eotmp++ = '\\'; - strcpy (eotmp, name); - - debug_printf ("trying %s", tmp); - - if ((suffix = perhaps_suffix (tmp, buf)) != NULL) - goto out; - } - while (*path && *++path); - -errout: - /* Couldn't find anything in the given path. - Take the appropriate action based on null_if_not_found. */ - if (null_if_notfound) - retval = NULL; - else - strcpy (buf, path_conv (name).get_win32 ()); - -out: - debug_printf ("%s = find_exec (%s)", buf, name); - if (known_suffix) - *known_suffix = suffix ?: strchr (buf, '\0'); - return retval; -} - -/* Utility for spawn_guts. */ - -static HANDLE -handle (int n, int direction) -{ - fhandler_base *fh = dtable[n]; - - if (!fh) - return INVALID_HANDLE_VALUE; - if (fh->get_close_on_exec ()) - return INVALID_HANDLE_VALUE; - if (direction == 0) - return fh->get_handle (); - return fh->get_output_handle (); -} - -/* Cover function for CreateProcess. - - This function is used by both the routines that search $PATH and those - that do not. This should work out ok as according to the documentation, - CreateProcess only searches $PATH if PROG has no directory elements. - - Spawning doesn't fit well with Posix's fork/exec (one can argue the merits - of either but that's beside the point). If we're exec'ing we want to - record the child pid for fork. If we're spawn'ing we don't want to do - this. It is up to the caller to handle both cases. - - The result is the process id. The handle of the created process is - stored in H. -*/ - -HANDLE NO_COPY hExeced = NULL; -DWORD NO_COPY exec_exit = 0; - -int -iscmd (const char *argv0, const char *what) -{ - int n; - n = strlen (argv0) - strlen (what); - if (n >= 2 && argv0[1] != ':') - return 0; - return n >= 0 && strcasecmp (argv0 + n, what) == 0 && - (n == 0 || isdirsep (argv0[n - 1])); -} - -class linebuf -{ -public: - size_t ix; - char *buf; - size_t alloced; - linebuf () : ix (0), buf (NULL), alloced (0) - { - } - ~linebuf () {/* if (buf) free (buf);*/} - void add (const char *what, int len); - void add (const char *what) {add (what, strlen (what));} - void prepend (const char *what, int len); -}; - -void -linebuf::add (const char *what, int len) -{ - size_t newix; - if ((newix = ix + len) >= alloced || !buf) - { - alloced += LINE_BUF_CHUNK + newix; - buf = (char *) realloc (buf, alloced + 1); - } - memcpy (buf + ix, what, len); - ix = newix; - buf[ix] = '\0'; -} - -void -linebuf::prepend (const char *what, int len) -{ - int buflen; - size_t newix; - if ((newix = ix + len) >= alloced) - { - alloced += LINE_BUF_CHUNK + newix; - buf = (char *) realloc (buf, alloced + 1); - buf[ix] = '\0'; - } - if ((buflen = strlen (buf))) - memmove (buf + len, buf, buflen + 1); - else - buf[newix] = '\0'; - memcpy (buf, what, len); - ix = newix; -} - -int __stdcall -spawn_guts (HANDLE hToken, const char * prog_arg, const char *const *argv, - const char *const envp[], pinfo *child, int mode) -{ - int i; - BOOL rc; - int argc; - - hExeced = NULL; - - MALLOC_CHECK; - - if (prog_arg == NULL) - { - syscall_printf ("prog_arg is NULL"); - set_errno(EINVAL); - return -1; - } - - syscall_printf ("spawn_guts (%.132s)", prog_arg); - - if (argv == NULL) - { - syscall_printf ("argv is NULL"); - set_errno(EINVAL); - return (-1); - } - - /* CreateProcess takes one long string that is the command line (sigh). - We need to quote any argument that has whitespace or embedded "'s. */ - - for (argc = 0; argv[argc]; argc++) - /* nothing */; - - char *real_path; - char real_path_buf[MAX_PATH]; - - linebuf one_line; - - if (argc == 3 && argv[1][0] == '/' && argv[1][1] == 'c' && - (iscmd (argv[0], "command.com") || iscmd (argv[0], "cmd.exe"))) - { - one_line.add (argv[0]); - one_line.add (" "); - one_line.add (argv[1]); - one_line.add (" "); - real_path = NULL; - one_line.add (argv[2]); - strcpy (real_path_buf, argv[0]); - goto skip_arg_parsing; - } - - MALLOC_CHECK; - - real_path = real_path_buf; - - const char *saved_prog_arg; - const char *newargv0, **firstarg; - const char *ext; - - if ((ext = perhaps_suffix (prog_arg, real_path)) == NULL) - { - set_errno (ENOENT); - return -1; - } - - MALLOC_CHECK; - saved_prog_arg = prog_arg; - newargv0 = argv[0]; - firstarg = &newargv0; - - /* If the file name ends in either .exe, .com, .bat, or .cmd we assume - that it is NOT a script file */ - while (*ext == '\0') - { - HANDLE hnd = CreateFileA (real_path, - GENERIC_READ, - FILE_SHARE_READ | FILE_SHARE_WRITE, - &sec_none_nih, - OPEN_EXISTING, - FILE_ATTRIBUTE_NORMAL, - 0); - if (hnd == INVALID_HANDLE_VALUE) - { - __seterrno (); - return -1; - } - - DWORD done; - - char buf[2 * MAX_PATH + 1]; - buf[0] = buf[1] = buf[2] = buf[sizeof(buf) - 1] = '\0'; - if (! ReadFile (hnd, buf, sizeof (buf) - 1, &done, 0)) - { - CloseHandle (hnd); - __seterrno (); - return -1; - } - - CloseHandle (hnd); - - if (buf[0] == 'M' && buf[1] == 'Z') - break; - - debug_printf ("%s is a script", prog_arg); - - char *ptr, *pgm, *arg1; - - if (buf[0] != '#' || buf[1] != '!') - { - strcpy (buf, "sh"); /* shell script without magic */ - pgm = buf; - ptr = buf + 2; - arg1 = NULL; - } - else - { - pgm = buf + 2; - pgm += strspn (pgm, " \t"); - for (ptr = pgm, arg1 = NULL; - *ptr && *ptr != '\r' && *ptr != '\n'; - ptr++) - if (!arg1 && (*ptr == ' ' || *ptr == '\t')) - { - /* Null terminate the initial command and step over - any additional white space. If we've hit the - end of the line, exit the loop. Otherwise, position - we've found the first argument. Position the current - pointer on the last known white space. */ - *ptr = '\0'; - char *newptr = ptr + 1; - newptr += strspn (newptr, " \t"); - if (!*newptr || *newptr == '\r' || *newptr == '\n') - break; - arg1 = newptr; - ptr = newptr - 1; - } - - - *ptr = '\0'; - } - - char buf2[MAX_PATH + 1]; - - /* pointers: - * pgm interpreter name - * arg1 optional string - * ptr end of string - */ - - if (!arg1) - one_line.prepend (" ", 1); - else - { - one_line.prepend ("\" ", 2); - one_line.prepend (arg1, strlen (arg1)); - one_line.prepend (" \"", 2); - } - - find_exec (pgm, real_path, "PATH=", 0, &ext); - cygwin_conv_to_posix_path (real_path, buf2); - one_line.prepend (buf2, strlen (buf2)); - - /* If script had absolute path, add it to script name now! - * This is necessary if script has been found via PATH. - * For example, /usr/local/bin/tkman started as "tkman": - * #!/usr/local/bin/wish -f - * ... - * We should run /usr/local/bin/wish -f /usr/local/bin/tkman, - * but not /usr/local/bin/wish -f tkman! - * We don't modify anything, if script has qulified path. - */ - if (firstarg) - *firstarg = saved_prog_arg; - - debug_printf ("prog_arg '%s', copy '%s'", prog_arg, one_line.buf); - firstarg = NULL; - } - - for (; *argv; argv++) - { - char *p = NULL; - const char *a = newargv0 ?: *argv; - - MALLOC_CHECK; - - newargv0 = NULL; - int len = strlen (a); - if (len != 0 && !(p = strpbrk (a, " \t\n\r\""))) - one_line.add (a, len); - else - { - one_line.add ("\"", 1); - for (; p; a = p, p = strchr (p, '"')) - { - one_line.add (a, ++p - a); - if (p[-1] == '"') - one_line.add ("\"", 1); - } - if (*a) - one_line.add (a); - one_line.add ("\"", 1); - } - MALLOC_CHECK; - one_line.add (" ", 1); - MALLOC_CHECK; - } - - MALLOC_CHECK; - if (one_line.ix) - one_line.buf[one_line.ix - 1] = '\0'; - else - one_line.add ("", 1); - MALLOC_CHECK; - -skip_arg_parsing: - PROCESS_INFORMATION pi = {0}; - - STARTUPINFO si = {0}; - si.lpReserved = NULL; - si.lpDesktop = NULL; - si.dwFlags = STARTF_USESTDHANDLES; - si.hStdInput = handle (0, 0); /* Get input handle */ - si.hStdOutput = handle (1, 1); /* Get output handle */ - si.hStdError = handle (2, 1); /* Get output handle */ - si.cb = sizeof (si); - - /* Pass fd table to a child */ - - MALLOC_CHECK; - int len = dtable.linearize_fd_array (0, 0); - MALLOC_CHECK; - if (len == -1) - { - system_printf ("FATAL error in linearize_fd_array"); - return -1; - } - int titlelen = 1 + (old_title && mode == _P_OVERLAY ? strlen (old_title) : 0); - si.cbReserved2 = len + titlelen + sizeof(child_info); - si.lpReserved2 = (LPBYTE) alloca (si.cbReserved2); - -# define ciresrv ((child_info *)si.lpReserved2) - HANDLE spr = NULL; - DWORD chtype; - if (mode != _P_OVERLAY) - chtype = PROC_SPAWN; - else - { - spr = CreateEvent(&sec_all, TRUE, FALSE, NULL); - ProtectHandle (spr); - chtype = PROC_EXEC; - } - - init_child_info (chtype, ciresrv, child->pid, spr); - - LPBYTE resrv = si.lpReserved2 + sizeof *ciresrv; -# undef ciresrv - - if (dtable.linearize_fd_array (resrv, len) < 0) - { - system_printf ("FATAL error in second linearize_fd_array"); - return -1; - } - - if (titlelen > 1) - strcpy ((char *) resrv + len, old_title); - else - resrv[len] = '\0'; - - /* We print the translated program and arguments here so the user can see - what was done to it. */ - syscall_printf ("spawn_guts (%s, %.132s)", real_path, one_line.buf); - - int flags = CREATE_DEFAULT_ERROR_MODE | CREATE_SUSPENDED | - GetPriorityClass (hMainProc); - - if (mode == _P_DETACH || !set_console_state_for_spawn ()) - flags |= DETACHED_PROCESS; - - MALLOC_CHECK; - /* Build windows style environment list */ - char *envblock = winenv (envp); - MALLOC_CHECK; - - /* Preallocated buffer for `sec_user' call */ - char sa_buf[1024]; - - if (hToken) - { - /* allow the child to interact with our window station/desktop */ - HANDLE hwst, hdsk; - SECURITY_INFORMATION dsi = DACL_SECURITY_INFORMATION; - DWORD n; - char wstname[1024]; - char dskname[1024]; - - hwst = GetProcessWindowStation(); - SetUserObjectSecurity(hwst, &dsi, get_null_sd ()); - GetUserObjectInformation(hwst, UOI_NAME, wstname, 1024, &n); - hdsk = GetThreadDesktop(GetCurrentThreadId()); - SetUserObjectSecurity(hdsk, &dsi, get_null_sd ()); - GetUserObjectInformation(hdsk, UOI_NAME, dskname, 1024, &n); - strcat (wstname, "\\"); - strcat (wstname, dskname); - si.lpDesktop = wstname; - /* force the new process to reread /etc/passwd and /etc/group */ - child->uid = USHRT_MAX; - child->username[0] = '\0'; - - char tu[1024]; - PSID sid = NULL; - DWORD ret_len; - if (GetTokenInformation (hToken, TokenUser, - (LPVOID) &tu, sizeof tu, - &ret_len)) - sid = ((TOKEN_USER *) &tu)->User.Sid; - else - system_printf ("GetTokenInformation: %E"); - - rc = CreateProcessAsUser (hToken, - real_path, /* image name - with full path */ - one_line.buf, /* what was passed to exec */ - /* process security attrs */ - allow_ntsec && sid ? sec_user (sa_buf, sid) - : &sec_all_nih, - /* thread security attrs */ - allow_ntsec && sid ? sec_user (sa_buf, sid) - : &sec_all_nih, - TRUE, /* inherit handles from parent */ - flags, - envblock,/* environment */ - 0, /* use current drive/directory */ - &si, - &pi); - } - else - rc = CreateProcessA (real_path, /* image name - with full path */ - one_line.buf, /* what was passed to exec */ - /* process security attrs */ - allow_ntsec ? sec_user (sa_buf) : &sec_all_nih, - /* thread security attrs */ - allow_ntsec ? sec_user (sa_buf) : &sec_all_nih, - TRUE, /* inherit handles from parent */ - flags, - envblock,/* environment */ - 0, /* use current drive/directory */ - &si, - &pi); - - MALLOC_CHECK; - free (envblock); - MALLOC_CHECK; - - /* Set errno now so that debugging messages from it appear before our - final debugging message [this is a general rule for debugging - messages]. */ - if (!rc) - __seterrno (); - - MALLOC_CHECK; - /* Name the handle similarly to proc_subproc. */ - ProtectHandle1 (pi.hProcess, childhProc); - ProtectHandle (pi.hThread); - MALLOC_CHECK; - - /* We print the original program name here so the user can see that too. */ - syscall_printf ("%d = spawn_guts (%s, %.132s)", - rc ? pi.dwProcessId : (unsigned int) -1, - prog_arg, one_line.buf); - - if (!rc) - { - if (spr) - ForceCloseHandle (spr); - return -1; - } - - /* Set up child's signal handlers */ - for (i = 0; i < NSIG; i++) - { - child->getsig(i).sa_mask = 0; - if (myself->getsig(i).sa_handler != SIG_IGN || (mode != _P_OVERLAY)) - child->getsig(i).sa_handler = SIG_DFL; - } - - if (mode == _P_OVERLAY) - { - close_all_files (); - strcpy (child->progname, real_path_buf); - proc_terminate (); - hExeced = pi.hProcess; - } - else - { - child->dwProcessId = pi.dwProcessId; - child->hProcess = pi.hProcess; - child->process_state |= PID_INITIALIZING; - proc_register (child); - } - - sigproc_printf ("spawned windows pid %d", pi.dwProcessId); - /* Start the child running */ - ResumeThread (pi.hThread); - ForceCloseHandle (pi.hThread); - - if (hToken) - CloseHandle (hToken); - - DWORD res; - - if (mode == _P_OVERLAY) - { - BOOL exited; - - HANDLE waitbuf[3] = {pi.hProcess, signal_arrived, spr}; - int nwait = 3; - - SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST); - res = 0; - DWORD timeout = INFINITE; - exec_exit = 1; - exited = FALSE; - MALLOC_CHECK; - waitfor: - switch (WaitForMultipleObjects (nwait, waitbuf, FALSE, timeout)) - { - case WAIT_TIMEOUT: - syscall_printf ("WFMO timed out after signal"); - if (WaitForSingleObject (pi.hProcess, 0) != WAIT_OBJECT_0) - { - sigproc_printf ("subprocess still alive after signal"); - res = exec_exit; - } - else - { - sigproc_printf ("subprocess exited after signal"); - case WAIT_OBJECT_0: - sigproc_printf ("subprocess exited"); - if (!GetExitCodeProcess (pi.hProcess, &res)) - res = exec_exit; - exited = TRUE; - } - if (nwait > 2) - if (WaitForSingleObject (spr, 1) == WAIT_OBJECT_0) - res |= EXIT_REPARENTING; - else if (!(res & EXIT_REPARENTING)) - { - MALLOC_CHECK; - close_all_files (); - MALLOC_CHECK; - } - break; - case WAIT_OBJECT_0 + 1: - sigproc_printf ("signal arrived"); - timeout = 10; - goto waitfor; - case WAIT_OBJECT_0 + 2: - res = EXIT_REPARENTING; - MALLOC_CHECK; - ForceCloseHandle (spr); - MALLOC_CHECK; - if (!parent_alive) - { - nwait = 1; - sigproc_terminate (); - goto waitfor; - } - break; - case WAIT_FAILED: - DWORD r; - system_printf ("wait failed: nwait %d, pid %d, winpid %d, %E", - nwait, myself->pid, myself->dwProcessId); - system_printf ("waitbuf[0] %p %d", waitbuf[0], - GetHandleInformation (waitbuf[0], &r)); - system_printf ("waitbuf[1] %p = %d", waitbuf[1], - GetHandleInformation (waitbuf[1], &r)); - set_errno (ECHILD); - return -1; - } - - if (nwait > 2) - ForceCloseHandle (spr); - - sigproc_printf ("res = %x", res); - - if (res & EXIT_REPARENTING) - { - /* Try to reparent child process. - * Make handles to child available to parent process and exit with - * EXIT_REPARENTING status. Wait() syscall in parent will then wait - * for newly created child. - */ - if (my_parent_is_alive ()) - { - pinfo *parent = procinfo (myself->ppid); - sigproc_printf ("parent = %p", parent); - HANDLE hP = OpenProcess (PROCESS_ALL_ACCESS, FALSE, - parent->dwProcessId); - sigproc_printf ("parent's handle = %d", hP); - if (hP == NULL && GetLastError () == ERROR_INVALID_PARAMETER) - res = 1; - else if (hP) - { - ProtectHandle (hP); - res = DuplicateHandle (hMainProc, pi.hProcess, hP, - &myself->hProcess, 0, FALSE, - DUPLICATE_SAME_ACCESS); - sigproc_printf ("Dup hP %d", res); - ForceCloseHandle (hP); - } - if (!res) - { - system_printf ("Reparent failed, parent handle %p, %E", hP); - system_printf ("my dwProcessId %d, myself->dwProcessId %d", - GetCurrentProcessId(), myself->dwProcessId); - system_printf ("myself->process_state %x", - myself->process_state); - system_printf ("myself->hProcess %x", myself->hProcess); - } - } - res = EXIT_REPARENTING; - ForceCloseHandle1 (hExeced, childhProc); - hExeced = INVALID_HANDLE_VALUE; - } - else if (exited) - { - ForceCloseHandle1 (hExeced, childhProc); - hExeced = INVALID_HANDLE_VALUE; // stop do_exit from attempting to terminate child - } - - MALLOC_CHECK; - do_exit (res | EXIT_NOCLOSEALL); - } - - if (mode == _P_WAIT) - { - waitpid (child->pid, (int *) &res, 0); - } - else if (mode == _P_DETACH) - { - /* Lose all memory of this child. */ - res = 0; - } - else if ((mode == _P_NOWAIT) || (mode == _P_NOWAITO)) - { - res = child->pid; - } - - return (int) res; -} - -extern "C" -int -cwait (int *result, int pid, int) -{ - return waitpid (pid, result, 0); -} - -/* - * Helper function for spawn runtime calls. - * Doesn't search the path. - */ - -extern "C" int -_spawnve (HANDLE hToken, int mode, const char *path, const char *const *argv, - const char *const *envp) -{ - pinfo *child; - int ret; - vfork_save *vf = vfork_storage.val (); - - if (vf != NULL && (vf->pid < 0) && mode == _P_OVERLAY) - mode = _P_NOWAIT; - else - vf = NULL; - - syscall_printf ("_spawnve (%s, %s, %x)", path, argv[0], envp); - - switch (mode) - { - case _P_OVERLAY: - /* We do not pass _P_SEARCH_PATH here. execve doesn't search PATH.*/ - /* Just act as an exec if _P_OVERLAY set. */ - spawn_guts (hToken, path, argv, envp, myself, mode); - /* Errno should be set by spawn_guts. */ - ret = -1; - break; - case _P_NOWAIT: - case _P_NOWAITO: - case _P_WAIT: - case _P_DETACH: - child = cygwin_shared->p.allocate_pid (); - if (!child) - { - set_errno (EAGAIN); - syscall_printf ("-1 = spawnve (), process table full"); - return -1; - } - strcpy (child->progname, path); - child->ppid = myself->pid; - child->uid = myself->uid; - child->gid = myself->gid; - child->pgid = myself->pgid; - child->sid = myself->sid; - child->ctty = myself->ctty; - child->umask = myself->umask; - child->process_state |= PID_INITIALIZING; - memcpy (child->username, myself->username, MAX_USER_NAME); - child->psid = myself->psid; - memcpy (child->sidbuf, myself->sidbuf, 40); - memcpy (child->logsrv, myself->logsrv, 256); - memcpy (child->domain, myself->domain, MAX_COMPUTERNAME_LENGTH+1); - subproc_init (); - ret = spawn_guts (hToken, path, argv, envp, child, mode); - if (ret == -1) - child->process_state = PID_NOT_IN_USE; - - if (vf) - { - vf->pid = child->pid; - longjmp (vf->j, 1); - } - break; - default: - set_errno (EINVAL); - ret = -1; - break; - } - return ret; -} - -/* - * spawn functions as implemented in the MS runtime library. - * Most of these based on (and copied from) newlib/libc/posix/execXX.c - */ - -extern "C" -int -spawnl (int mode, const char *path, const char *arg0, ...) -{ - int i; - va_list args; - const char *argv[256]; - - va_start (args, arg0); - argv[0] = arg0; - i = 1; - - do - argv[i] = va_arg (args, const char *); - while (argv[i++] != NULL); - - va_end (args); - - return _spawnve (NULL, mode, path, (char * const *) argv, - *user_data->envptr); -} - -extern "C" -int -spawnle (int mode, const char *path, const char *arg0, ...) -{ - int i; - va_list args; - const char * const *envp; - const char *argv[256]; - - va_start (args, arg0); - argv[0] = arg0; - i = 1; - - do - argv[i] = va_arg (args, const char *); - while (argv[i++] != NULL); - - envp = va_arg (args, const char * const *); - va_end (args); - - return _spawnve (NULL, mode, path, (char * const *) argv, - (char * const *) envp); -} - -extern "C" -int -spawnlp (int mode, const char *path, const char *arg0, ...) -{ - int i; - va_list args; - const char *argv[256]; - - va_start (args, arg0); - argv[0] = arg0; - i = 1; - - do - argv[i] = va_arg (args, const char *); - while (argv[i++] != NULL); - - va_end (args); - - return spawnvpe (mode, path, (char * const *) argv, *user_data->envptr); -} - -extern "C" -int -spawnlpe (int mode, const char *path, const char *arg0, ...) -{ - int i; - va_list args; - const char * const *envp; - const char *argv[256]; - - va_start (args, arg0); - argv[0] = arg0; - i = 1; - - do - argv[i] = va_arg (args, const char *); - while (argv[i++] != NULL); - - envp = va_arg (args, const char * const *); - va_end (args); - - return spawnvpe (mode, path, (char * const *) argv, envp); -} - -extern "C" -int -spawnv (int mode, const char *path, const char * const *argv) -{ - return _spawnve (NULL, mode, path, argv, *user_data->envptr); -} - -extern "C" -int -spawnve (int mode, const char *path, char * const *argv, - const char * const *envp) -{ - return _spawnve (NULL, mode, path, argv, envp); -} - -extern "C" -int -spawnvp (int mode, const char *path, const char * const *argv) -{ - return spawnvpe (mode, path, argv, *user_data->envptr); -} - -extern "C" -int -spawnvpe (int mode, const char *file, const char * const *argv, - const char * const *envp) -{ - char buf[MAXNAMLEN]; - return _spawnve (NULL, mode, find_exec (file, buf), argv, envp); -} |