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authorNick Clifton <nickc@redhat.com>2000-01-07 22:33:48 +0000
committerNick Clifton <nickc@redhat.com>2000-01-07 22:33:48 +0000
commit5a298d2d9c2cf09936f8380963173e6b66249207 (patch)
tree076dd5b5daaad77f5017c9422212dcd09ee99846 /binutils/resrc.c
parentfa19fce00328512d4e0e86da9fa7ca4487997c7c (diff)
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Apply Mumit Khan's patch to allow temporary file for process interconnection
Diffstat (limited to 'binutils/resrc.c')
-rw-r--r--binutils/resrc.c275
1 files changed, 255 insertions, 20 deletions
diff --git a/binutils/resrc.c b/binutils/resrc.c
index 8ed6a5d..b38c75d 100644
--- a/binutils/resrc.c
+++ b/binutils/resrc.c
@@ -29,9 +29,50 @@
#include <assert.h>
#include <ctype.h>
+#include <errno.h>
#include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#else /* ! HAVE_SYS_WAIT_H */
+#if ! defined (_WIN32) || defined (__CYGWIN__)
+#ifndef WIFEXITED
+#define WIFEXITED(w) (((w)&0377) == 0)
+#endif
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
+#endif
+#ifndef WTERMSIG
+#define WTERMSIG(w) ((w) & 0177)
+#endif
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(w) (((w) >> 8) & 0377)
+#endif
+#else /* defined (_WIN32) && ! defined (__CYGWIN__) */
+#ifndef WIFEXITED
+#define WIFEXITED(w) (((w) & 0xff) == 0)
+#endif
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(w) (((w) & 0xff) != 0 && ((w) & 0xff) != 0x7f)
+#endif
+#ifndef WTERMSIG
+#define WTERMSIG(w) ((w) & 0x7f)
+#endif
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(w) (((w) & 0xff00) >> 8)
+#endif
+#endif /* defined (_WIN32) && ! defined (__CYGWIN__) */
+#endif /* ! HAVE_SYS_WAIT_H */
#if defined (_WIN32) && ! defined (__CYGWIN32__)
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO 1
+#endif
+
+#if defined (_WIN32) && ! defined (__CYGWIN__)
#define popen _popen
#define pclose _pclose
#endif
@@ -86,6 +127,15 @@ int rc_lineno;
static FILE *cpp_pipe;
+/* The temporary file used if we're not using popen, so we can delete it
+ if we exit. */
+
+static char *cpp_temp_file;
+
+/* Input stream is either a file or a pipe. */
+
+static enum {ISTREAM_PIPE, ISTREAM_FILE} istream_type;
+
/* As we read the rc file, we attach information to this structure. */
static struct res_directory *resources;
@@ -112,9 +162,11 @@ static int icons;
/* Local functions. */
+static int run_cmd PARAMS ((char *, const char *));
+static FILE *open_input_stream PARAMS ((char *));
static FILE *look_for_default PARAMS ((char *, const char *, int,
const char *, const char *));
-static void close_pipe PARAMS ((void));
+static void close_input_stream PARAMS ((void));
static void unexpected_eof PARAMS ((const char *));
static int get_word PARAMS ((FILE *, const char *));
static unsigned long get_long PARAMS ((FILE *, const char *));
@@ -122,6 +174,163 @@ static void get_data
PARAMS ((FILE *, unsigned char *, unsigned long, const char *));
static void define_fontdirs PARAMS ((void));
+/* Run `cmd' and redirect the output to `redir'. */
+
+static int
+run_cmd (cmd, redir)
+ char *cmd;
+ const char *redir;
+{
+ char *s;
+ int pid, wait_status, retcode;
+ int i;
+ const char **argv;
+ char *errmsg_fmt, *errmsg_arg;
+ char *temp_base = choose_temp_base ();
+ int in_quote;
+ char sep;
+ int redir_handle = -1;
+ int stdout_save = -1;
+
+ /* Count the args. */
+ i = 0;
+
+ for (s = cmd; *s; s++)
+ if (*s == ' ')
+ i++;
+
+ i++;
+ argv = alloca (sizeof (char *) * (i + 3));
+ i = 0;
+ s = cmd;
+
+ while (1)
+ {
+ while (*s == ' ' && *s != 0)
+ s++;
+
+ if (*s == 0)
+ break;
+
+ in_quote = (*s == '\'' || *s == '"');
+ sep = (in_quote) ? *s++ : ' ';
+ argv[i++] = s;
+
+ while (*s != sep && *s != 0)
+ s++;
+
+ if (*s == 0)
+ break;
+
+ *s++ = 0;
+
+ if (in_quote)
+ s++;
+ }
+ argv[i++] = NULL;
+
+ /* Setup the redirection. We can't use the usual fork/exec and redirect
+ since we may be running on non-POSIX Windows host. */
+
+ fflush (stdout);
+ fflush (stderr);
+
+ /* Open temporary output file. */
+ redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT, 0666);
+ if (redir_handle == -1)
+ fatal (_("can't open temporary file `%s': %s"), redir,
+ strerror (errno));
+
+ /* Duplicate the stdout file handle so it can be restored later. */
+ stdout_save = dup (STDOUT_FILENO);
+ if (stdout_save == -1)
+ fatal (_("can't redirect stdout: `%s': %s"), redir, strerror (errno));
+
+ /* Redirect stdout to our output file. */
+ dup2 (redir_handle, STDOUT_FILENO);
+
+ pid = pexecute (argv[0], (char * const *) argv, program_name, temp_base,
+ &errmsg_fmt, &errmsg_arg, PEXECUTE_ONE | PEXECUTE_SEARCH);
+
+ /* Restore stdout to its previous setting. */
+ dup2 (stdout_save, STDOUT_FILENO);
+
+ /* Close reponse file. */
+ close (redir_handle);
+
+ if (pid == -1)
+ {
+ fatal (_("%s %s: %s"), errmsg_fmt, errmsg_arg, strerror (errno));
+ return 1;
+ }
+
+ retcode = 0;
+ pid = pwait (pid, &wait_status, 0);
+
+ if (pid == -1)
+ {
+ fatal (_("wait: %s"), strerror (errno));
+ retcode = 1;
+ }
+ else if (WIFSIGNALED (wait_status))
+ {
+ fatal (_("subprocess got fatal signal %d"), WTERMSIG (wait_status));
+ retcode = 1;
+ }
+ else if (WIFEXITED (wait_status))
+ {
+ if (WEXITSTATUS (wait_status) != 0)
+ {
+ fatal (_("%s exited with status %d"), cmd,
+ WEXITSTATUS (wait_status));
+ retcode = 1;
+ }
+ }
+ else
+ retcode = 1;
+
+ return retcode;
+}
+
+static FILE *
+open_input_stream (cmd)
+ char *cmd;
+{
+ if (istream_type == ISTREAM_FILE)
+ {
+ char *fileprefix;
+
+ fileprefix = choose_temp_base ();
+ cpp_temp_file = (char *) xmalloc (strlen (fileprefix) + 5);
+ sprintf (cpp_temp_file, "%s.irc", fileprefix);
+ free (fileprefix);
+
+ if (run_cmd (cmd, cpp_temp_file))
+ fatal (_("can't execute `%s': %s"), cmd, strerror (errno));
+
+ cpp_pipe = fopen (cpp_temp_file, FOPEN_RT);;
+ if (cpp_pipe == NULL)
+ fatal (_("can't open temporary file `%s': %s"),
+ cpp_temp_file, strerror (errno));
+
+ if (verbose)
+ fprintf (stderr,
+ _("Using temporary file `%s' to read preprocessor output\n"),
+ cpp_temp_file);
+ }
+ else
+ {
+ cpp_pipe = popen (cmd, FOPEN_RT);
+ if (cpp_pipe == NULL)
+ fatal (_("can't popen `%s': %s"), cmd, strerror (errno));
+ if (verbose)
+ fprintf (stderr, _("Using popen to read preprocessor output\n"));
+ }
+
+ xatexit (close_input_stream);
+ return cpp_pipe;
+}
+
/* look for the preprocessor program */
static FILE *
@@ -143,7 +352,11 @@ look_for_default (cmd, prefix, end_prefix, preprocargs, filename)
if (space)
*space = 0;
- if (strchr (cmd, '/'))
+ if (
+#if defined (__DJGPP__) || defined (__CYGWIN__) || defined (_WIN32)
+ strchr (cmd, '\\') ||
+#endif
+ strchr (cmd, '/'))
{
found = (stat (cmd, &s) == 0
#ifdef HAVE_EXECUTABLE_SUFFIX
@@ -154,7 +367,7 @@ look_for_default (cmd, prefix, end_prefix, preprocargs, filename)
if (! found)
{
if (verbose)
- fprintf (stderr, "Tried `%s'\n", cmd);
+ fprintf (stderr, _("Tried `%s'\n"), cmd);
return NULL;
}
}
@@ -165,23 +378,26 @@ look_for_default (cmd, prefix, end_prefix, preprocargs, filename)
DEFAULT_PREPROCESSOR, preprocargs, filename);
if (verbose)
- fprintf (stderr, "Using `%s'\n", cmd);
+ fprintf (stderr, _("Using `%s'\n"), cmd);
- cpp_pipe = popen (cmd, FOPEN_RT);
+ cpp_pipe = open_input_stream (cmd);
return cpp_pipe;
}
/* Read an rc file. */
struct res_directory *
-read_rc_file (filename, preprocessor, preprocargs, language)
+read_rc_file (filename, preprocessor, preprocargs, language, use_temp_file)
const char *filename;
const char *preprocessor;
const char *preprocargs;
int language;
+ int use_temp_file;
{
char *cmd;
+ istream_type = (use_temp_file) ? ISTREAM_FILE : ISTREAM_PIPE;
+
if (preprocargs == NULL)
preprocargs = "";
if (filename == NULL)
@@ -195,7 +411,7 @@ read_rc_file (filename, preprocessor, preprocargs, language)
+ 10);
sprintf (cmd, "%s %s %s", preprocessor, preprocargs, filename);
- cpp_pipe = popen (cmd, FOPEN_RT);
+ cpp_pipe = open_input_stream (cmd);
}
else
{
@@ -219,7 +435,7 @@ read_rc_file (filename, preprocessor, preprocargs, language)
if (*cp == '-')
dash = cp;
if (
-#if defined(__DJGPP__) || defined (__CYGWIN__) || defined(__WIN32__)
+#if defined (__DJGPP__) || defined (__CYGWIN__) || defined(_WIN32)
*cp == ':' || *cp == '\\' ||
#endif
*cp == '/')
@@ -257,12 +473,9 @@ read_rc_file (filename, preprocessor, preprocargs, language)
}
}
- if (cpp_pipe == NULL)
- fatal (_("can't popen `%s': %s"), cmd, strerror (errno));
+
free (cmd);
- xatexit (close_pipe);
-
rc_filename = xstrdup (filename);
rc_lineno = 1;
if (language != -1)
@@ -270,10 +483,8 @@ read_rc_file (filename, preprocessor, preprocargs, language)
yyin = cpp_pipe;
yyparse ();
- if (pclose (cpp_pipe) != 0)
- fprintf (stderr, _("%s: warning: preprocessor failed\n"), program_name);
- cpp_pipe = NULL;
-
+ close_input_stream ();
+
if (fontdirs != NULL)
define_fontdirs ();
@@ -283,13 +494,37 @@ read_rc_file (filename, preprocessor, preprocargs, language)
return resources;
}
-/* Close the pipe if it is open. This is called via xatexit. */
+/* Close the input stream if it is open. */
-void
-close_pipe ()
+static void
+close_input_stream ()
{
if (cpp_pipe != NULL)
pclose (cpp_pipe);
+
+ if (istream_type == ISTREAM_FILE)
+ {
+ if (cpp_pipe != NULL)
+ fclose (cpp_pipe);
+
+ if (cpp_temp_file != NULL)
+ {
+ int errno_save = errno;
+
+ unlink (cpp_temp_file);
+ errno = errno_save;
+ free (cpp_temp_file);
+ }
+ }
+ else
+ {
+ if (cpp_pipe != NULL)
+ pclose (cpp_pipe);
+ }
+
+ /* Since this is also run via xatexit, safeguard. */
+ cpp_pipe = NULL;
+ cpp_temp_file = NULL;
}
/* Report an error while reading an rc file. */
@@ -307,7 +542,7 @@ void
rcparse_warning (msg)
const char *msg;
{
- fprintf (stderr, "%s:%d: %s\n", rc_filename, rc_lineno, msg);
+ fprintf (stderr, _("%s:%d: %s\n"), rc_filename, rc_lineno, msg);
}
/* Die if we get an unexpected end of file. */