diff options
Diffstat (limited to 'libio/oldiopopen.c')
-rw-r--r-- | libio/oldiopopen.c | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/libio/oldiopopen.c b/libio/oldiopopen.c deleted file mode 100644 index af7774ae90..0000000000 --- a/libio/oldiopopen.c +++ /dev/null @@ -1,299 +0,0 @@ -/* Copyright (C) 1998-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Written by Per Bothner <bothner@cygnus.com>. - - 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/>. - - As a special exception, if you link the code in this file with - files compiled with a GNU compiler to produce an executable, - that does not cause the resulting executable to be covered by - the GNU Lesser General Public License. This exception does not - however invalidate any other reasons why the executable file - might be covered by the GNU Lesser General Public License. - This exception applies to code released by its copyright holders - in files containing the exception. */ - -#define _IO_USE_OLD_IO_FILE -#ifndef _POSIX_SOURCE -# define _POSIX_SOURCE -#endif -#include "libioP.h" -#include <signal.h> -#include <unistd.h> -#include <stdlib.h> -#ifdef _LIBC -# include <unistd.h> -#endif -#include <sys/types.h> -#include <sys/wait.h> - -#ifndef _IO_fork -#ifdef _LIBC -#define _IO_fork __fork -#else -#define _IO_fork fork /* defined in libiberty, if needed */ -#endif -extern _IO_pid_t _IO_fork (void) __THROW; -#endif - -#include <shlib-compat.h> -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) - -#ifndef _IO_pipe -#ifdef _LIBC -#define _IO_pipe __pipe -#else -#define _IO_pipe pipe -#endif -extern int _IO_pipe (int des[2]) __THROW; -#endif - -#ifndef _IO_dup2 -#ifdef _LIBC -#define _IO_dup2 __dup2 -#else -#define _IO_dup2 dup2 -#endif -extern int _IO_dup2 (int fd, int fd2) __THROW; -#endif - -#ifndef _IO_waitpid -#ifdef _LIBC -#define _IO_waitpid __waitpid -#else -#define _IO_waitpid waitpid -#endif -#endif - -#ifndef _IO_execl -#define _IO_execl execl -#endif -#ifndef _IO__exit -#define _IO__exit _exit -#endif - -#ifndef _IO_close -#ifdef _LIBC -#define _IO_close __close -#else -#define _IO_close close -#endif -#endif - -struct _IO_proc_file -{ - struct _IO_FILE_complete_plus file; - /* Following fields must match those in class procbuf (procbuf.h) */ - _IO_pid_t pid; - struct _IO_proc_file *next; -}; -typedef struct _IO_proc_file _IO_proc_file; - -static struct _IO_proc_file *old_proc_file_chain; - -#ifdef _IO_MTSAFE_IO -static _IO_lock_t proc_file_chain_lock = _IO_lock_initializer; - -static void -unlock (void *not_used) -{ - _IO_lock_unlock (proc_file_chain_lock); -} -#endif - -_IO_FILE * -attribute_compat_text_section -_IO_old_proc_open (_IO_FILE *fp, const char *command, const char *mode) -{ - volatile int read_or_write; - volatile int parent_end, child_end; - int pipe_fds[2]; - _IO_pid_t child_pid; - if (_IO_file_is_open (fp)) - return NULL; - if (_IO_pipe (pipe_fds) < 0) - return NULL; - if (mode[0] == 'r' && mode[1] == '\0') - { - parent_end = pipe_fds[0]; - child_end = pipe_fds[1]; - read_or_write = _IO_NO_WRITES; - } - else if (mode[0] == 'w' && mode[1] == '\0') - { - parent_end = pipe_fds[1]; - child_end = pipe_fds[0]; - read_or_write = _IO_NO_READS; - } - else - { - _IO_close (pipe_fds[0]); - _IO_close (pipe_fds[1]); - __set_errno (EINVAL); - return NULL; - } - ((_IO_proc_file *) fp)->pid = child_pid = _IO_fork (); - if (child_pid == 0) - { - int child_std_end = mode[0] == 'r' ? 1 : 0; - struct _IO_proc_file *p; - - _IO_close (parent_end); - if (child_end != child_std_end) - { - _IO_dup2 (child_end, child_std_end); - _IO_close (child_end); - } - /* POSIX.2: "popen() shall ensure that any streams from previous - popen() calls that remain open in the parent process are closed - in the new child process." */ - for (p = old_proc_file_chain; p; p = p->next) - _IO_close (_IO_fileno ((_IO_FILE *) p)); - - _IO_execl ("/bin/sh", "sh", "-c", command, (char *) 0); - _IO__exit (127); - } - _IO_close (child_end); - if (child_pid < 0) - { - _IO_close (parent_end); - return NULL; - } - _IO_fileno (fp) = parent_end; - - /* Link into old_proc_file_chain. */ -#ifdef _IO_MTSAFE_IO - _IO_cleanup_region_start_noarg (unlock); - _IO_lock_lock (proc_file_chain_lock); -#endif - ((_IO_proc_file *) fp)->next = old_proc_file_chain; - old_proc_file_chain = (_IO_proc_file *) fp; -#ifdef _IO_MTSAFE_IO - _IO_lock_unlock (proc_file_chain_lock); - _IO_cleanup_region_end (0); -#endif - - _IO_mask_flags (fp, read_or_write, _IO_NO_READS|_IO_NO_WRITES); - return fp; -} - -_IO_FILE * -attribute_compat_text_section -_IO_old_popen (const char *command, const char *mode) -{ - struct locked_FILE - { - struct _IO_proc_file fpx; -#ifdef _IO_MTSAFE_IO - _IO_lock_t lock; -#endif - } *new_f; - _IO_FILE *fp; - - new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE)); - if (new_f == NULL) - return NULL; -#ifdef _IO_MTSAFE_IO - new_f->fpx.file.file._file._lock = &new_f->lock; -#endif - fp = &new_f->fpx.file.file._file; - _IO_old_init (fp, 0); - _IO_JUMPS_FILE_plus (&new_f->fpx.file) = &_IO_old_proc_jumps; - _IO_old_file_init_internal ((struct _IO_FILE_plus *) &new_f->fpx.file); -#if !_IO_UNIFIED_JUMPTABLES - new_f->fpx.file.vtable = NULL; -#endif - if (_IO_old_proc_open (fp, command, mode) != NULL) - return fp; - _IO_un_link ((struct _IO_FILE_plus *) &new_f->fpx.file); - free (new_f); - return NULL; -} - -int -attribute_compat_text_section -_IO_old_proc_close (_IO_FILE *fp) -{ - /* This is not name-space clean. FIXME! */ - int wstatus; - _IO_proc_file **ptr = &old_proc_file_chain; - _IO_pid_t wait_pid; - int status = -1; - - /* Unlink from old_proc_file_chain. */ -#ifdef _IO_MTSAFE_IO - _IO_cleanup_region_start_noarg (unlock); - _IO_lock_lock (proc_file_chain_lock); -#endif - for ( ; *ptr != NULL; ptr = &(*ptr)->next) - { - if (*ptr == (_IO_proc_file *) fp) - { - *ptr = (*ptr)->next; - status = 0; - break; - } - } -#ifdef _IO_MTSAFE_IO - _IO_lock_unlock (proc_file_chain_lock); - _IO_cleanup_region_end (0); -#endif - - if (status < 0 || _IO_close (_IO_fileno(fp)) < 0) - return -1; - /* POSIX.2 Rationale: "Some historical implementations either block - or ignore the signals SIGINT, SIGQUIT, and SIGHUP while waiting - for the child process to terminate. Since this behavior is not - described in POSIX.2, such implementations are not conforming." */ - do - { - wait_pid = _IO_waitpid (((_IO_proc_file *) fp)->pid, &wstatus, 0); - } - while (wait_pid == -1 && errno == EINTR); - if (wait_pid == -1) - return -1; - return wstatus; -} - -const struct _IO_jump_t _IO_old_proc_jumps libio_vtable = { - JUMP_INIT_DUMMY, - JUMP_INIT(finish, _IO_old_file_finish), - JUMP_INIT(overflow, _IO_old_file_overflow), - JUMP_INIT(underflow, _IO_old_file_underflow), - JUMP_INIT(uflow, _IO_default_uflow), - JUMP_INIT(pbackfail, _IO_default_pbackfail), - JUMP_INIT(xsputn, _IO_old_file_xsputn), - JUMP_INIT(xsgetn, _IO_default_xsgetn), - JUMP_INIT(seekoff, _IO_old_file_seekoff), - JUMP_INIT(seekpos, _IO_default_seekpos), - JUMP_INIT(setbuf, _IO_old_file_setbuf), - JUMP_INIT(sync, _IO_old_file_sync), - JUMP_INIT(doallocate, _IO_file_doallocate), - JUMP_INIT(read, _IO_file_read), - JUMP_INIT(write, _IO_old_file_write), - JUMP_INIT(seek, _IO_file_seek), - JUMP_INIT(close, _IO_old_proc_close), - JUMP_INIT(stat, _IO_file_stat), - JUMP_INIT(showmanyc, _IO_default_showmanyc), - JUMP_INIT(imbue, _IO_default_imbue) -}; - -strong_alias (_IO_old_popen, __old_popen) -compat_symbol (libc, _IO_old_popen, _IO_popen, GLIBC_2_0); -compat_symbol (libc, __old_popen, popen, GLIBC_2_0); -compat_symbol (libc, _IO_old_proc_open, _IO_proc_open, GLIBC_2_0); -compat_symbol (libc, _IO_old_proc_close, _IO_proc_close, GLIBC_2_0); - -#endif |