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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:17:33 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:17:33 +0000
commit5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch)
tree739caf8c461053357daa9f162bef34516c7bf452 /src/port/dirent.c
parentInitial commit. (diff)
downloadpostgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz
postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip
Adding upstream version 15.5.upstream/15.5
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/port/dirent.c')
-rw-r--r--src/port/dirent.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/port/dirent.c b/src/port/dirent.c
new file mode 100644
index 0000000..10ea4bd
--- /dev/null
+++ b/src/port/dirent.c
@@ -0,0 +1,137 @@
+/*-------------------------------------------------------------------------
+ *
+ * dirent.c
+ * opendir/readdir/closedir for win32/msvc
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ * src/port/dirent.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef FRONTEND
+#include "postgres.h"
+#else
+#include "postgres_fe.h"
+#endif
+
+#include <dirent.h>
+
+
+struct DIR
+{
+ char *dirname;
+ struct dirent ret; /* Used to return to caller */
+ HANDLE handle;
+};
+
+DIR *
+opendir(const char *dirname)
+{
+ DWORD attr;
+ DIR *d;
+
+ /* Make sure it is a directory */
+ attr = GetFileAttributes(dirname);
+ if (attr == INVALID_FILE_ATTRIBUTES)
+ {
+ errno = ENOENT;
+ return NULL;
+ }
+ if ((attr & FILE_ATTRIBUTE_DIRECTORY) != FILE_ATTRIBUTE_DIRECTORY)
+ {
+ errno = ENOTDIR;
+ return NULL;
+ }
+
+ d = malloc(sizeof(DIR));
+ if (!d)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ d->dirname = malloc(strlen(dirname) + 4);
+ if (!d->dirname)
+ {
+ errno = ENOMEM;
+ free(d);
+ return NULL;
+ }
+ strcpy(d->dirname, dirname);
+ if (d->dirname[strlen(d->dirname) - 1] != '/' &&
+ d->dirname[strlen(d->dirname) - 1] != '\\')
+ strcat(d->dirname, "\\"); /* Append backslash if not already there */
+ strcat(d->dirname, "*"); /* Search for entries named anything */
+ d->handle = INVALID_HANDLE_VALUE;
+ d->ret.d_ino = 0; /* no inodes on win32 */
+ d->ret.d_reclen = 0; /* not used on win32 */
+ d->ret.d_type = DT_UNKNOWN;
+
+ return d;
+}
+
+struct dirent *
+readdir(DIR *d)
+{
+ WIN32_FIND_DATA fd;
+
+ if (d->handle == INVALID_HANDLE_VALUE)
+ {
+ d->handle = FindFirstFile(d->dirname, &fd);
+ if (d->handle == INVALID_HANDLE_VALUE)
+ {
+ /* If there are no files, force errno=0 (unlike mingw) */
+ if (GetLastError() == ERROR_FILE_NOT_FOUND)
+ errno = 0;
+ else
+ _dosmaperr(GetLastError());
+ return NULL;
+ }
+ }
+ else
+ {
+ if (!FindNextFile(d->handle, &fd))
+ {
+ /* If there are no more files, force errno=0 (like mingw) */
+ if (GetLastError() == ERROR_NO_MORE_FILES)
+ errno = 0;
+ else
+ _dosmaperr(GetLastError());
+ return NULL;
+ }
+ }
+ strcpy(d->ret.d_name, fd.cFileName); /* Both strings are MAX_PATH long */
+ d->ret.d_namlen = strlen(d->ret.d_name);
+
+ /*
+ * For reparse points dwReserved0 field will contain the ReparseTag. We
+ * check this first, because reparse points are also reported as
+ * directories.
+ */
+ if ((fd.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0 &&
+ (fd.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT))
+ d->ret.d_type = DT_LNK;
+ else if ((fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
+ d->ret.d_type = DT_DIR;
+ else
+ d->ret.d_type = DT_REG;
+
+ return &d->ret;
+}
+
+int
+closedir(DIR *d)
+{
+ int ret = 0;
+
+ if (d->handle != INVALID_HANDLE_VALUE)
+ ret = !FindClose(d->handle);
+ free(d->dirname);
+ free(d);
+
+ return ret;
+}