Commit 5fb50884 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
Browse files

Remove unused vlc_execve()

parent 7b3f9bc3
......@@ -830,10 +830,6 @@ VLC_API bool vlc_ureduce( unsigned *, unsigned *, uint64_t, uint64_t, uint64_t )
VLC_API void * vlc_memalign( void **base, size_t alignment, size_t size ) VLC_USED;
/* execve wrapper (defined in src/extras/libc.c) */
VLC_API int vlc_execve( vlc_object_t *p_object, int i_argc, char *const *pp_argv, char *const *pp_env, const char *psz_cwd, const char *p_in, size_t i_in, char **pp_data, size_t *pi_data ) VLC_USED;
#define vlc_execve(a,b,c,d,e,f,g,h,i) vlc_execve(VLC_OBJECT(a),b,c,d,e,f,g,h,i)
VLC_API void vlc_tdestroy( void *, void (*)(void *) );
/* Fast large memory copy and memory set */
......
......@@ -43,24 +43,6 @@
# include <iconv.h>
#endif
#ifdef HAVE_FORK
# include <signal.h>
# include <unistd.h>
# include <sys/wait.h>
# include <sys/socket.h>
# include <sys/poll.h>
# ifndef PF_LOCAL
# define PF_LOCAL PF_UNIX
# endif
#endif
#if defined(WIN32) || defined(UNDER_CE)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
/*****************************************************************************
* Local conversion routine from ISO_6937 to UTF-8 charset. Support for this
* is still missing in libiconv, hence multiple operating systems lack it.
......@@ -437,310 +419,3 @@ bool vlc_ureduce( unsigned *pi_dst_nom, unsigned *pi_dst_den,
return b_exact;
}
#undef vlc_execve
/*************************************************************************
* vlc_execve: Execute an external program with a given environment,
* wait until it finishes and return its standard output
*************************************************************************/
int vlc_execve( vlc_object_t *p_object, int i_argc, char *const *ppsz_argv,
char *const *ppsz_env, const char *psz_cwd,
const char *p_in, size_t i_in,
char **pp_data, size_t *pi_data )
{
(void)i_argc; // <-- hmph
#ifdef HAVE_FORK
# define BUFSIZE 1024
int fds[2], i_status;
if (socketpair (PF_LOCAL, SOCK_STREAM, 0, fds))
return -1;
pid_t pid = -1;
if ((fds[0] > 2) && (fds[1] > 2))
pid = fork ();
switch (pid)
{
case -1:
msg_Err (p_object, "unable to fork (%m)");
close (fds[0]);
close (fds[1]);
return -1;
case 0:
{
sigset_t set;
sigemptyset (&set);
pthread_sigmask (SIG_SETMASK, &set, NULL);
/* NOTE:
* Like it or not, close can fail (and not only with EBADF)
*/
if ((dup2 (fds[1], 0) == 0) && (dup2 (fds[1], 1) == 1)
&& ((psz_cwd == NULL) || (chdir (psz_cwd) == 0)))
execve (ppsz_argv[0], ppsz_argv, ppsz_env);
_exit (EXIT_FAILURE);
}
}
close (fds[1]);
*pi_data = 0;
if (*pp_data)
free (*pp_data);
*pp_data = NULL;
if (i_in == 0)
shutdown (fds[0], SHUT_WR);
while (!p_object->b_die)
{
struct pollfd ufd[1];
memset (ufd, 0, sizeof (ufd));
ufd[0].fd = fds[0];
ufd[0].events = POLLIN;
if (i_in > 0)
ufd[0].events |= POLLOUT;
if (poll (ufd, 1, 10) <= 0)
continue;
if (ufd[0].revents & ~POLLOUT)
{
char *ptr = realloc (*pp_data, *pi_data + BUFSIZE + 1);
if (ptr == NULL)
break; /* safely abort */
*pp_data = ptr;
ssize_t val = read (fds[0], ptr + *pi_data, BUFSIZE);
switch (val)
{
case -1:
case 0:
shutdown (fds[0], SHUT_RD);
break;
default:
*pi_data += val;
}
}
if (ufd[0].revents & POLLOUT)
{
ssize_t val = write (fds[0], p_in, i_in);
switch (val)
{
case -1:
case 0:
i_in = 0;
shutdown (fds[0], SHUT_WR);
break;
default:
i_in -= val;
p_in += val;
}
}
}
close (fds[0]);
while (waitpid (pid, &i_status, 0) == -1);
if (WIFEXITED (i_status))
{
i_status = WEXITSTATUS (i_status);
if (i_status)
msg_Warn (p_object, "child %s (PID %d) exited with error code %d",
ppsz_argv[0], (int)pid, i_status);
}
else
if (WIFSIGNALED (i_status)) // <-- this should be redumdant a check
{
i_status = WTERMSIG (i_status);
msg_Warn (p_object, "child %s (PID %d) exited on signal %d (%s)",
ppsz_argv[0], (int)pid, i_status, strsignal (i_status));
}
#elif defined( WIN32 ) && !defined( UNDER_CE )
SECURITY_ATTRIBUTES saAttr;
PROCESS_INFORMATION piProcInfo;
STARTUPINFO siStartInfo;
BOOL bFuncRetn = FALSE;
HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
DWORD i_status;
char *psz_cmd = NULL, *p_env = NULL, *p = NULL;
char *const *ppsz_parser;
int i_size;
/* Set the bInheritHandle flag so pipe handles are inherited. */
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
/* Create a pipe for the child process's STDOUT. */
if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
{
msg_Err( p_object, "stdout pipe creation failed" );
return -1;
}
/* Ensure the read handle to the pipe for STDOUT is not inherited. */
SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
/* Create a pipe for the child process's STDIN. */
if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
{
msg_Err( p_object, "stdin pipe creation failed" );
return -1;
}
/* Ensure the write handle to the pipe for STDIN is not inherited. */
SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
/* Set up members of the PROCESS_INFORMATION structure. */
ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
/* Set up members of the STARTUPINFO structure. */
ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
siStartInfo.cb = sizeof(STARTUPINFO);
siStartInfo.hStdError = hChildStdoutWr;
siStartInfo.hStdOutput = hChildStdoutWr;
siStartInfo.hStdInput = hChildStdinRd;
siStartInfo.wShowWindow = SW_HIDE;
siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
/* Set up the command line. */
psz_cmd = malloc(32768);
if( !psz_cmd )
return -1;
psz_cmd[0] = '\0';
i_size = 32768;
ppsz_parser = &ppsz_argv[0];
while ( ppsz_parser[0] != NULL && i_size > 0 )
{
/* Protect the last argument with quotes ; the other arguments
* are supposed to be already protected because they have been
* passed as a command-line option. */
if ( ppsz_parser[1] == NULL )
{
strncat( psz_cmd, "\"", i_size );
i_size--;
}
strncat( psz_cmd, *ppsz_parser, i_size );
i_size -= strlen( *ppsz_parser );
if ( ppsz_parser[1] == NULL )
{
strncat( psz_cmd, "\"", i_size );
i_size--;
}
strncat( psz_cmd, " ", i_size );
i_size--;
ppsz_parser++;
}
/* Set up the environment. */
p = p_env = malloc(32768);
if( !p )
{
free( psz_cmd );
return -1;
}
i_size = 32768;
ppsz_parser = &ppsz_env[0];
while ( *ppsz_parser != NULL && i_size > 0 )
{
memcpy( p, *ppsz_parser,
__MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
p += strlen(*ppsz_parser) + 1;
i_size -= strlen(*ppsz_parser) + 1;
ppsz_parser++;
}
*p = '\0';
/* Create the child process. */
bFuncRetn = CreateProcess( NULL,
psz_cmd, // command line
NULL, // process security attributes
NULL, // primary thread security attributes
TRUE, // handles are inherited
0, // creation flags
p_env,
psz_cwd,
&siStartInfo, // STARTUPINFO pointer
&piProcInfo ); // receives PROCESS_INFORMATION
free( psz_cmd );
free( p_env );
if ( bFuncRetn == 0 )
{
msg_Err( p_object, "child creation failed" );
return -1;
}
/* Read from a file and write its contents to a pipe. */
while ( i_in > 0 && !p_object->b_die )
{
DWORD i_written;
if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
break;
i_in -= i_written;
p_in += i_written;
}
/* Close the pipe handle so the child process stops reading. */
CloseHandle(hChildStdinWr);
/* Close the write end of the pipe before reading from the
* read end of the pipe. */
CloseHandle(hChildStdoutWr);
/* Read output from the child process. */
*pi_data = 0;
if( *pp_data )
free( pp_data );
*pp_data = NULL;
*pp_data = malloc( 1025 ); /* +1 for \0 */
while ( !p_object->b_die )
{
DWORD i_read;
if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
NULL )
|| i_read == 0 )
break;
*pi_data += i_read;
*pp_data = xrealloc( *pp_data, *pi_data + 1025 );
}
while ( !p_object->b_die
&& !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
&& i_status != STILL_ACTIVE )
msleep( 10000 );
CloseHandle(piProcInfo.hProcess);
CloseHandle(piProcInfo.hThread);
if ( i_status )
msg_Warn( p_object,
"child %s returned with error code %ld",
ppsz_argv[0], i_status );
#else
msg_Err( p_object, "vlc_execve called but no implementation is available" );
return -1;
#endif
if (*pp_data == NULL)
return -1;
(*pp_data)[*pi_data] = '\0';
return 0;
}
......@@ -532,7 +532,6 @@ vlc_event_manager_fini
vlc_event_manager_init
vlc_event_manager_register_event_type
vlc_event_send
vlc_execve
vlc_fastmem_register
vlc_fourcc_GetCodec
vlc_fourcc_GetCodecAudio
......
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