* Win32 (NT, Win2k, XP). replace() doesn't work on Win95/98/Me.
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/port/dirmod.c,v 1.31 2004/10/18 19:08:58 momjian Exp $
+ * $PostgreSQL: pgsql/src/port/dirmod.c,v 1.32 2004/10/28 22:09:31 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include
#include
-#define _(x) gettext((x))
-
-#ifndef TEST_VERSION
-
#if defined(WIN32) || defined(__CYGWIN__)
-
#ifndef __CYGWIN__
#include
#else
#include
#include
#endif
+#endif
+
+#define _(x) gettext((x))
#ifndef FRONTEND
+
/*
- * Call non-macro versions of palloc, can't reference CurrentMemoryContext
- * because of DLLIMPORT.
+ * On Windows, call non-macro versions of palloc; we can't reference
+ * CurrentMemoryContext in this file because of DLLIMPORT conflict.
*/
+#if defined(WIN32) || defined(__CYGWIN__)
#undef palloc
#undef pstrdup
-#undef pfree
#define palloc(sz) pgport_palloc(sz)
#define pstrdup(str) pgport_pstrdup(str)
-#define pfree(pointer) pgport_pfree(pointer)
#endif
+#else /* FRONTEND */
+
+/*
+ * In frontend, fake palloc behavior with these
+ */
+#undef palloc
+#undef pstrdup
+#define palloc(sz) fe_palloc(sz)
+#define pstrdup(str) fe_pstrdup(str)
+#define repalloc(pointer,sz) fe_repalloc(pointer,sz)
+#define pfree(pointer) free(pointer)
+
+static void *
+fe_palloc(Size size)
+{
+ void *res;
+
+ if ((res = malloc(size)) == NULL)
+ {
+ fprintf(stderr, _("out of memory\n"));
+ exit(1);
+ }
+ return res;
+}
+
+static char *
+fe_pstrdup(const char *string)
+{
+ char *res;
+
+ if ((res = strdup(string)) == NULL)
+ {
+ fprintf(stderr, _("out of memory\n"));
+ exit(1);
+ }
+ return res;
+}
+
+static void *
+fe_repalloc(void *pointer, Size size)
+{
+ void *res;
+
+ if ((res = realloc(pointer, size)) == NULL)
+ {
+ fprintf(stderr, _("out of memory\n"));
+ exit(1);
+ }
+ return res;
+}
+
+#endif /* FRONTEND */
+
+
+#if defined(WIN32) || defined(__CYGWIN__)
/*
* pgrename
#ifdef WIN32 /* Cygwin has its own symlinks */
+
/*
* pgsymlink support:
*
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR) & msg, 0, NULL);
#ifndef FRONTEND
- ereport(ERROR, (errcode_for_file_access(),
- errmsg("Error setting junction for %s: %s", nativeTarget, msg)));
+ ereport(ERROR,
+ (errcode_for_file_access(),
+ errmsg("Error setting junction for %s: %s",
+ nativeTarget, msg)));
#else
- fprintf(stderr, "Error setting junction for %s: %s", nativeTarget, msg);
+ fprintf(stderr, "Error setting junction for %s: %s\n",
+ nativeTarget, msg);
#endif
LocalFree(msg);
return 0;
}
-#endif
-#endif
+
+#endif /* WIN32 */
+
+#endif /* defined(WIN32) || defined(__CYGWIN__) */
/* We undefined this above, so we redefine it */
#define unlink(path) pgunlink(path)
#endif
+
/*
- * rmt_cleanup
+ * fnames
+ *
+ * return a list of the names of objects in the argument directory
+ */
+static char **
+fnames(char *path)
+{
+ DIR *dir;
+ struct dirent *file;
+ char **filenames;
+ int numnames = 0;
+ int fnsize = 200; /* enough for many small dbs */
+
+ dir = opendir(path);
+ if (dir == NULL)
+ return NULL;
+
+ filenames = (char **) palloc(fnsize * sizeof(char *));
+
+ while ((file = readdir(dir)) != NULL)
+ {
+ if (strcmp(file->d_name, ".") != 0 && strcmp(file->d_name, "..") != 0)
+ {
+ if (numnames+1 >= fnsize)
+ {
+ fnsize *= 2;
+ filenames = (char **) repalloc(filenames,
+ fnsize * sizeof(char *));
+ }
+ filenames[numnames++] = pstrdup(file->d_name);
+ }
+ }
+
+ filenames[numnames] = NULL;
+
+ closedir(dir);
+
+ return filenames;
+}
+
+/*
+ * fnames_cleanup
*
* deallocate memory used for filenames
*/
static void
-rmt_cleanup(char **filenames)
+fnames_cleanup(char **filenames)
{
char **fn;
for (fn = filenames; *fn; fn++)
-#ifdef FRONTEND
- free(*fn);
-
- free(filenames);
-#else
pfree(*fn);
pfree(filenames);
-#endif
}
-
/*
* rmtree
*
* Assumes path points to a valid directory.
* Deletes everything under path.
* If rmtopdir is true deletes the directory too.
- *
*/
bool
rmtree(char *path, bool rmtopdir)
{
char filepath[MAXPGPATH];
- DIR *dir;
- struct dirent *file;
char **filenames;
char **filename;
- int numnames = 0;
struct stat statbuf;
/*
* we copy all the names out of the directory before we start
* modifying it.
*/
+ filenames = fnames(path);
- dir = opendir(path);
- if (dir == NULL)
+ if (filenames == NULL)
return false;
- while ((file = readdir(dir)) != NULL)
- {
- if (strcmp(file->d_name, ".") != 0 && strcmp(file->d_name, "..") != 0)
- numnames++;
- }
-
- rewinddir(dir);
-
-#ifdef FRONTEND
- if ((filenames = malloc((numnames + 2) * sizeof(char *))) == NULL)
- {
- fprintf(stderr, _("out of memory\n"));
- exit(1);
- }
-#else
- filenames = palloc((numnames + 2) * sizeof(char *));
-#endif
-
- numnames = 0;
-
- while ((file = readdir(dir)) != NULL)
- {
- if (strcmp(file->d_name, ".") != 0 && strcmp(file->d_name, "..") != 0)
-#ifdef FRONTEND
- if ((filenames[numnames++] = strdup(file->d_name)) == NULL)
- {
- fprintf(stderr, _("out of memory\n"));
- exit(1);
- }
-#else
- filenames[numnames++] = pstrdup(file->d_name);
-#endif
- }
-
- filenames[numnames] = NULL;
-
- closedir(dir);
-
/* now we have the names we can start removing things */
for (filename = filenames; *filename; filename++)
if (stat(filepath, &statbuf) != 0)
{
- rmt_cleanup(filenames);
+ fnames_cleanup(filenames);
return false;
}
/* call ourselves recursively for a directory */
if (!rmtree(filepath, true))
{
- rmt_cleanup(filenames);
+ fnames_cleanup(filenames);
return false;
}
}
{
if (unlink(filepath) != 0)
{
- rmt_cleanup(filenames);
+ fnames_cleanup(filenames);
return false;
}
}
{
if (rmdir(path) != 0)
{
- rmt_cleanup(filenames);
+ fnames_cleanup(filenames);
return false;
}
}
- rmt_cleanup(filenames);
+ fnames_cleanup(filenames);
return true;
}
-
-
-#else
-
-
-/*
- * Illustrates problem with Win32 rename() and unlink()
- * under concurrent access.
- *
- * Run with arg '1', then less than 5 seconds later, run with
- * arg '2' (rename) or '3'(unlink) to see the problem.
- */
-
-#include
-#include
-#include
-
-#define halt(str) \
-do { \
- fputs(str, stderr); \
- exit(1); \
-} while (0)
-
-int
-main(int argc, char *argv[])
-{
- FILE *fd;
-
- if (argc != 2)
- halt("Arg must be '1' (test), '2' (rename), or '3' (unlink)\n"
- "Run '1' first, then less than 5 seconds later, run\n"
- "'2' to test rename, or '3' to test unlink.\n");
-
- if (atoi(argv[1]) == 1)
- {
- if ((fd = fopen("/rtest.txt", "w")) == NULL)
- halt("Can not create file\n");
- fclose(fd);
- if ((fd = fopen("/rtest.txt", "r")) == NULL)
- halt("Can not open file\n");
- Sleep(5000);
- }
- else if (atoi(argv[1]) == 2)
- {
- unlink("/rtest.new");
- if ((fd = fopen("/rtest.new", "w")) == NULL)
- halt("Can not create file\n");
- fclose(fd);
- while (!MoveFileEx("/rtest.new", "/rtest.txt", MOVEFILE_REPLACE_EXISTING))
- {
- if (GetLastError() != ERROR_ACCESS_DENIED)
- halt("Unknown failure\n");
- else
- fprintf(stderr, "move failed\n");
- Sleep(500);
- }
- halt("move successful\n");
- }
- else if (atoi(argv[1]) == 3)
- {
- while (unlink("/rtest.txt"))
- {
- if (errno != EACCES)
- halt("Unknown failure\n");
- else
- fprintf(stderr, "unlink failed\n");
- Sleep(500);
- }
- halt("unlink successful\n");
- }
- else
- halt("invalid arg\n");
-
- return 0;
-}
-
-#endif
projects / postgresql.git / commitdiff