pex-win32.c (<errno.h>): Include.
* pex-win32.c (<errno.h>): Include. (fix_argv): Remove. (argv_to_cmdline): New function. (std_suffixes): New variable. (no_suffixes): Likewise. (find_executable): New function. (win32_spawn): Likewise. (spawn_script): Use win32_spawn instead of _spawnv[p]. (pex_win32_exec_child): Replace MSVCRT calls with Win32 API calls. (pex_win32_wait): Likewise. From-SVN: r112592
This commit is contained in:
Mark Mitchell
Mark Mitchell
parent
16659fcf33
commit
bd9e7c5cd5
@ -1,3 +1,16 @@
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2006-03-31 Mark Mitchell <mark@codesourcery.com>
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* pex-win32.c (<errno.h>): Include.
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(fix_argv): Remove.
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(argv_to_cmdline): New function.
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(std_suffixes): New variable.
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(no_suffixes): Likewise.
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(find_executable): New function.
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(win32_spawn): Likewise.
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(spawn_script): Use win32_spawn instead of _spawnv[p].
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(pex_win32_exec_child): Replace MSVCRT calls with Win32 API calls.
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(pex_win32_wait): Likewise.
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2006-03-24 Jim Blandy <jimb@codesourcery.com>
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* pex-common.c (pex_run): Simplify output name handling.
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@ -41,6 +41,7 @@ Boston, MA 02110-1301, USA. */
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <errno.h>
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/* mingw32 headers may not define the following. */
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@ -72,115 +73,6 @@ backslashify (char *s)
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return;
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}
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/* This is a kludge to get around the Microsoft C spawn functions' propensity
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to remove the outermost set of double quotes from all arguments. */
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static const char * const *
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fix_argv (char * const *argvec)
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{
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char **argv;
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int i;
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char *command0;
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/* See whether we need to change anything. */
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for (command0 = argvec[0]; *command0 != '\0'; command0++)
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if (*command0 == '/')
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break;
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if (*command0 == '\0')
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{
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for (i = 1; argvec[i] != NULL; i++)
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if (strpbrk (argvec[i], "\" \t") != NULL)
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break;
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if (argvec[i] == NULL)
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return (const char * const *) argvec;
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}
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for (i = 0; argvec[i] != NULL; i++)
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;
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argv = XNEWVEC (char *, i + 2);
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argv++; /* Leave space at the beginning of argv
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for potential #! handling */
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for (i = 0; argvec[i] != NULL; i++)
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argv[i] = xstrdup (argvec[i]);
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argv[i] = NULL;
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backslashify (argv[0]);
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for (i = 1; argv[i] != 0; i++)
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{
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int len, j;
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char *temp, *newtemp;
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temp = argv[i];
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len = strlen (temp);
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for (j = 0; j < len; j++)
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{
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if (temp[j] == '"')
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{
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newtemp = XNEWVEC (char, len + 2);
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strncpy (newtemp, temp, j);
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newtemp [j] = '\\';
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strncpy (&newtemp [j+1], &temp [j], len-j);
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newtemp [len+1] = 0;
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temp = newtemp;
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len++;
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j++;
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}
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}
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if (argv[i] != temp)
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{
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free (argv[i]);
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argv[i] = temp;
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}
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}
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for (i = 0; argv[i] != 0; i++)
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{
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if (strpbrk (argv[i], " \t"))
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{
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int len, trailing_backslash;
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char *temp;
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len = strlen (argv[i]);
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trailing_backslash = 0;
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/* There is an added complication when an arg with embedded white
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space ends in a backslash (such as in the case of -iprefix arg
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passed to cpp). The resulting quoted strings gets misinterpreted
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by the command interpreter -- it thinks that the ending quote
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is escaped by the trailing backslash and things get confused.
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We handle this case by escaping the trailing backslash, provided
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it was not escaped in the first place. */
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if (len > 1
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&& argv[i][len-1] == '\\'
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&& argv[i][len-2] != '\\')
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{
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trailing_backslash = 1;
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++len; /* to escape the final backslash. */
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}
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len += 2; /* and for the enclosing quotes. */
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temp = XNEWVEC (char, len + 1);
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temp[0] = '"';
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strcpy (temp + 1, argv[i]);
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if (trailing_backslash)
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temp[len - 2] = '\\';
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temp[len - 1] = '"';
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temp[len] = '\0';
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free (argv[i]);
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argv[i] = temp;
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}
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}
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return (const char * const *) argv;
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}
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static int pex_win32_open_read (struct pex_obj *, const char *, int);
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static int pex_win32_open_write (struct pex_obj *, const char *, int);
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static long pex_win32_exec_child (struct pex_obj *, int, const char *,
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@ -422,8 +314,225 @@ msys_rootify (const char *executable)
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}
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#endif
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/* Return a Windows command-line from ARGV. It is the caller's
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responsibility to free the string returned. */
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static char *
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argv_to_cmdline (char *const *argv)
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{
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char *cmdline;
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char *p;
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size_t cmdline_len;
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int i, j, k;
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cmdline_len = 0;
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for (i = 0; argv[i]; i++)
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{
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/* We quote every last argument. This simplifies the problem;
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we need only escape embedded double-quotes and immediately
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preceeding backslash characters. A sequence of backslach characters
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that is not follwed by a double quote character will not be
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escaped. */
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for (j = 0; argv[i][j]; j++)
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{
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if (argv[i][j] == '"')
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{
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/* Escape preceeding backslashes. */
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for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
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cmdline_len++;
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/* Escape the qote character. */
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cmdline_len++;
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}
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}
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/* Trailing backslashes also need to be escaped because they will be
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followed by the terminating quote. */
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for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
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cmdline_len++;
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cmdline_len += j;
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cmdline_len += 3; /* for leading and trailing quotes and space */
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}
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cmdline = xmalloc (cmdline_len);
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p = cmdline;
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for (i = 0; argv[i]; i++)
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{
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*p++ = '"';
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for (j = 0; argv[i][j]; j++)
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{
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if (argv[i][j] == '"')
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{
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for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
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*p++ = '\\';
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*p++ = '\\';
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}
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*p++ = argv[i][j];
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}
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for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
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*p++ = '\\';
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*p++ = '"';
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*p++ = ' ';
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}
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p[-1] = '\0';
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return cmdline;
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}
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static const char *const
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std_suffixes[] = {
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".com",
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".exe",
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".bat",
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".cmd",
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0
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};
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static const char *const
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no_suffixes[] = {
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"",
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0
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};
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/* Returns the full path to PROGRAM. If SEARCH is true, look for
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PROGRAM in each directory in PATH. */
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static char *
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find_executable (const char *program, BOOL search)
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{
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char *full_executable;
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char *e;
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size_t fe_len;
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const char *path = 0;
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const char *const *ext;
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const char *p, *q;
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size_t proglen = strlen (program);
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int has_extension = !!strchr (program, '.');
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int has_slash = (strchr (program, '/') || strchr (program, '\\'));
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HANDLE h;
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if (has_slash)
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search = FALSE;
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if (search)
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path = getenv ("PATH");
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if (!path)
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path = "";
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fe_len = 0;
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for (p = path; *p; p = q)
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{
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q = p;
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while (*q != ';' && *q != '\0')
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q++;
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if ((size_t)(q - p) > fe_len)
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fe_len = q - p;
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if (*q == ';')
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q++;
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}
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fe_len = fe_len + 1 + proglen + (has_extension ? 1 : 5);
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full_executable = xmalloc (fe_len);
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p = path;
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do
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{
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q = p;
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while (*q != ';' && *q != '\0')
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q++;
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e = full_executable;
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memcpy (e, p, q - p);
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e += (q - p);
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if (q - p)
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*e++ = '\\';
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strcpy (e, program);
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if (*q == ';')
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q++;
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for (e = full_executable; *e; e++)
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if (*e == '/')
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*e = '\\';
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/* At this point, e points to the terminating NUL character for
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full_executable. */
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for (ext = has_extension ? no_suffixes : std_suffixes; *ext; ext++)
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{
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/* Remove any current extension. */
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*e = '\0';
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/* Add the new one. */
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strcat (full_executable, *ext);
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/* Attempt to open this file. */
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h = CreateFile (full_executable, GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
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if (h != INVALID_HANDLE_VALUE)
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goto found;
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}
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p = q;
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}
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while (*p);
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free (full_executable);
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return 0;
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found:
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CloseHandle (h);
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return full_executable;
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}
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/* Low-level process creation function. */
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static long
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spawn_script (const char *executable, const char * const * argv)
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win32_spawn (const char *executable,
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BOOL search,
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char *const *argv,
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DWORD dwCreationFlags,
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LPSTARTUPINFO si,
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LPPROCESS_INFORMATION pi)
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{
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char *full_executable;
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char *cmdline;
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full_executable = NULL;
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cmdline = NULL;
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full_executable = find_executable (executable, search);
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if (!full_executable)
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goto error;
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cmdline = argv_to_cmdline (argv);
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if (!cmdline)
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goto error;
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/* Create the child process. */
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if (!CreateProcess (full_executable, cmdline,
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/*lpProcessAttributes=*/NULL,
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/*lpThreadAttributes=*/NULL,
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/*bInheritHandles=*/TRUE,
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dwCreationFlags,
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/*lpEnvironment=*/NULL,
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/*lpCurrentDirectory=*/NULL,
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si,
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pi))
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{
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free (full_executable);
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return -1;
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}
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/* Clean up. */
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CloseHandle (pi->hThread);
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free (full_executable);
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return (long) pi->hProcess;
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error:
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if (cmdline)
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free (cmdline);
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if (full_executable)
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free (full_executable);
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return -1;
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}
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static long
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spawn_script (const char *executable, char *const *argv,
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DWORD dwCreationFlags,
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LPSTARTUPINFO si,
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LPPROCESS_INFORMATION pi)
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{
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int pid = -1;
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int save_errno = errno;
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@ -455,17 +564,21 @@ spawn_script (const char *executable, const char * const * argv)
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executable = strrchr (executable1, '\\') + 1;
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if (!executable)
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executable = executable1;
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pid = _spawnvp (_P_NOWAIT, executable, argv);
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pid = win32_spawn (executable, TRUE, argv,
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dwCreationFlags, si, pi);
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#else
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if (strchr (executable1, '\\') == NULL)
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pid = _spawnvp (_P_NOWAIT, executable1, argv);
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pid = win32_spawn (executable1, TRUE, argv,
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dwCreationFlags, si, pi);
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else if (executable1[0] != '\\')
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pid = _spawnv (_P_NOWAIT, executable1, argv);
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pid = win32_spawn (executable1, FALSE, argv,
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dwCreationFlags, si, pi);
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else
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{
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const char *newex = mingw_rootify (executable1);
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*avhere = newex;
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pid = _spawnv (_P_NOWAIT, newex, argv);
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pid = win32_spawn (newex, FALSE, argv,
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dwCreationFlags, si, pi);
|
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if (executable1 != newex)
|
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free ((char *) newex);
|
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if (pid < 0)
|
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@ -474,7 +587,8 @@ spawn_script (const char *executable, const char * const * argv)
|
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if (newex != executable1)
|
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{
|
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*avhere = newex;
|
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pid = _spawnv (_P_NOWAIT, newex, argv);
|
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pid = win32_spawn (newex, FALSE, argv,
|
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dwCreationFlags, si, pi);
|
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free ((char *) newex);
|
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}
|
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}
|
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@ -496,149 +610,95 @@ pex_win32_exec_child (struct pex_obj *obj ATTRIBUTE_UNUSED, int flags,
|
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int in, int out, int errdes, const char **errmsg,
|
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int *err)
|
||||
{
|
||||
int org_in, org_out, org_errdes;
|
||||
long pid;
|
||||
const char * const * newargv;
|
||||
HANDLE stdin_handle;
|
||||
HANDLE stdout_handle;
|
||||
HANDLE stderr_handle;
|
||||
DWORD dwCreationFlags;
|
||||
OSVERSIONINFO version_info;
|
||||
STARTUPINFO si;
|
||||
PROCESS_INFORMATION pi;
|
||||
|
||||
org_in = -1;
|
||||
org_out = -1;
|
||||
org_errdes = -1;
|
||||
stdin_handle = INVALID_HANDLE_VALUE;
|
||||
stdout_handle = INVALID_HANDLE_VALUE;
|
||||
stderr_handle = INVALID_HANDLE_VALUE;
|
||||
|
||||
if (in != STDIN_FILE_NO)
|
||||
stdin_handle = (HANDLE) _get_osfhandle (in);
|
||||
stdout_handle = (HANDLE) _get_osfhandle (out);
|
||||
if (!(flags & PEX_STDERR_TO_STDOUT))
|
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stderr_handle = (HANDLE) _get_osfhandle (errdes);
|
||||
else
|
||||
stderr_handle = stdout_handle;
|
||||
|
||||
/* Determine the version of Windows we are running on. */
|
||||
version_info.dwOSVersionInfoSize = sizeof (version_info);
|
||||
GetVersionEx (&version_info);
|
||||
if (version_info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
|
||||
/* On Windows 95/98/ME the CREATE_NO_WINDOW flag is not
|
||||
supported, so we cannot avoid creating a console window. */
|
||||
dwCreationFlags = 0;
|
||||
else
|
||||
{
|
||||
org_in = _dup (STDIN_FILE_NO);
|
||||
if (org_in < 0)
|
||||
HANDLE conout_handle;
|
||||
|
||||
/* Determine whether or not we have an associated console. */
|
||||
conout_handle = CreateFile("CONOUT$",
|
||||
GENERIC_WRITE,
|
||||
FILE_SHARE_WRITE,
|
||||
/*lpSecurityAttributes=*/NULL,
|
||||
OPEN_EXISTING,
|
||||
FILE_ATTRIBUTE_NORMAL,
|
||||
/*hTemplateFile=*/NULL);
|
||||
if (conout_handle == INVALID_HANDLE_VALUE)
|
||||
/* There is no console associated with this process. Since
|
||||
the child is a console process, the OS would normally
|
||||
create a new console Window for the child. Since we'll be
|
||||
redirecting the child's standard streams, we do not need
|
||||
the console window. */
|
||||
dwCreationFlags = CREATE_NO_WINDOW;
|
||||
else
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup";
|
||||
return -1;
|
||||
}
|
||||
if (_dup2 (in, STDIN_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (_close (in) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
/* There is a console associated with the process, so the OS
|
||||
will not create a new console. And, if we use
|
||||
CREATE_NO_WINDOW in this situation, the child will have
|
||||
no associated console. Therefore, if the child's
|
||||
standard streams are connected to the console, the output
|
||||
will be discarded. */
|
||||
CloseHandle(conout_handle);
|
||||
dwCreationFlags = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (out != STDOUT_FILE_NO)
|
||||
{
|
||||
org_out = _dup (STDOUT_FILE_NO);
|
||||
if (org_out < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup";
|
||||
return -1;
|
||||
}
|
||||
if (_dup2 (out, STDOUT_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (_close (out) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (errdes != STDERR_FILE_NO
|
||||
|| (flags & PEX_STDERR_TO_STDOUT) != 0)
|
||||
{
|
||||
org_errdes = _dup (STDERR_FILE_NO);
|
||||
if (org_errdes < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup";
|
||||
return -1;
|
||||
}
|
||||
if (_dup2 ((flags & PEX_STDERR_TO_STDOUT) != 0 ? STDOUT_FILE_NO : errdes,
|
||||
STDERR_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (errdes != STDERR_FILE_NO)
|
||||
{
|
||||
if (_close (errdes) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
newargv = fix_argv (argv);
|
||||
pid = (((flags & PEX_SEARCH) != 0 ? _spawnvp : _spawnv)
|
||||
(_P_NOWAIT, executable, newargv));
|
||||
/* Since the child will be a console process, it will, by default,
|
||||
connect standard input/output to its console. However, we want
|
||||
the child to use the handles specifically designated above. In
|
||||
addition, if there is no console (such as when we are running in
|
||||
a Cygwin X window), then we must redirect the child's
|
||||
input/output, as there is no console for the child to use. */
|
||||
memset (&si, 0, sizeof (si));
|
||||
si.cb = sizeof (si);
|
||||
si.dwFlags = STARTF_USESTDHANDLES;
|
||||
si.hStdInput = stdin_handle;
|
||||
si.hStdOutput = stdout_handle;
|
||||
si.hStdError = stderr_handle;
|
||||
|
||||
/* Create the child process. */
|
||||
pid = win32_spawn (executable, (flags & PEX_SEARCH) != 0,
|
||||
argv, dwCreationFlags, &si, &pi);
|
||||
if (pid == -1)
|
||||
pid = spawn_script (executable, newargv);
|
||||
|
||||
pid = spawn_script (executable, argv, dwCreationFlags, &si, &pi);
|
||||
if (pid == -1)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = ((flags & PEX_SEARCH) != 0) ? "_spawnvp" : "_spawnv";
|
||||
*err = ENOENT;
|
||||
*errmsg = "CreateProcess";
|
||||
}
|
||||
|
||||
if (in != STDIN_FILE_NO)
|
||||
{
|
||||
if (_dup2 (org_in, STDIN_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (_close (org_in) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (out != STDOUT_FILE_NO)
|
||||
{
|
||||
if (_dup2 (org_out, STDOUT_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (_close (org_out) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (errdes != STDERR_FILE_NO
|
||||
|| (flags & PEX_STDERR_TO_STDOUT) != 0)
|
||||
{
|
||||
if (_dup2 (org_errdes, STDERR_FILE_NO) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_dup2";
|
||||
return -1;
|
||||
}
|
||||
if (_close (org_errdes) < 0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_close";
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
/* Close the standard output and standard error handles in the
|
||||
parent. */
|
||||
if (out != STDOUT_FILENO)
|
||||
obj->funcs->close (obj, out);
|
||||
if (errdes != STDERR_FILENO)
|
||||
obj->funcs->close (obj, errdes);
|
||||
|
||||
return pid;
|
||||
}
|
||||
@ -656,30 +716,34 @@ pex_win32_wait (struct pex_obj *obj ATTRIBUTE_UNUSED, long pid,
|
||||
int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED,
|
||||
const char **errmsg, int *err)
|
||||
{
|
||||
int termstat;
|
||||
DWORD termstat;
|
||||
HANDLE h;
|
||||
|
||||
if (time != NULL)
|
||||
memset (time, 0, sizeof *time);
|
||||
|
||||
h = (HANDLE) pid;
|
||||
|
||||
/* FIXME: If done is non-zero, we should probably try to kill the
|
||||
process. */
|
||||
|
||||
if (_cwait (&termstat, pid, WAIT_CHILD) < 0)
|
||||
if (WaitForSingleObject (h, INFINITE) != WAIT_OBJECT_0)
|
||||
{
|
||||
*err = errno;
|
||||
*errmsg = "_cwait";
|
||||
CloseHandle (h);
|
||||
*err = ECHILD;
|
||||
*errmsg = "WaitForSingleObject";
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* cwait returns the child process exit code in termstat. A value
|
||||
of 3 indicates that the child caught a signal, but not which one.
|
||||
Since only SIGABRT, SIGFPE and SIGINT do anything, we report
|
||||
SIGABRT. */
|
||||
|
||||
GetExitCodeProcess (h, &termstat);
|
||||
CloseHandle (h);
|
||||
|
||||
/* A value of 3 indicates that the child caught a signal, but not
|
||||
which one. Since only SIGABRT, SIGFPE and SIGINT do anything, we
|
||||
report SIGABRT. */
|
||||
if (termstat == 3)
|
||||
*status = SIGABRT;
|
||||
else
|
||||
*status = ((termstat & 0xff) << 8);
|
||||
*status = (termstat & 0xff) << 8;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user