-/*
- * Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file fd.c Helper functions for file descriptor handling. */
*
* \param fn The file name.
*
- * \return Non-zero iff file exists.
+ * \return True iff file exists.
*/
-int file_exists(const char *fn)
+bool file_exists(const char *fn)
{
struct stat statbuf;
* PROT_EXEC PROT_READ PROT_WRITE.
* \param flags Exactly one of MAP_SHARED and MAP_PRIVATE.
* \param fd The file to mmap from.
- * \param offset Mmap start.
* \param map Result pointer.
*
* \return Standard.
*
* \sa mmap(2).
*/
-int para_mmap(size_t length, int prot, int flags, int fd, off_t offset,
- void *map)
+int para_mmap(size_t length, int prot, int flags, int fd, void *map)
{
void **m = map;
errno = EINVAL;
if (!length)
goto err;
- *m = mmap(NULL, length, prot, flags, fd, offset);
+ *m = mmap(NULL, length, prot, flags, fd, (off_t)0);
if (*m != MAP_FAILED)
return 1;
err:
return ret;
}
-/**
- * A wrapper for fchdir().
- *
- * \param fd An open file descriptor.
- *
- * \return Standard.
- */
-static int para_fchdir(int fd)
-{
- if (fchdir(fd) < 0)
- return -ERRNO_TO_PARA_ERROR(errno);
- return 1;
-}
-
/**
* A wrapper for mkdir(2).
*
if (S_ISDIR(file_status.st_mode))
goto out;
- ret = para_mmap(*size, mmap_prot, mmap_flags, fd, 0, map);
+ ret = para_mmap(*size, mmap_prot, mmap_flags, fd, map);
out:
if (ret < 0 || !fd_ptr)
close(fd);
{
DIR *dir;
struct dirent *entry;
- int cwd_fd, ret2, ret = para_opendir(dirname, &dir, &cwd_fd);
+ int cwd_fd, ret = para_opendir(dirname, &dir, &cwd_fd);
if (ret < 0)
return ret == -ERRNO_TO_PARA_ERROR(EACCES)? 1 : ret;
ret = 1;
out:
closedir(dir);
- ret2 = para_fchdir(cwd_fd);
- if (ret2 < 0 && ret >= 0)
- ret = ret2;
+ if (fchdir(cwd_fd) < 0 && ret >= 0)
+ ret = -ERRNO_TO_PARA_ERROR(errno);
close(cwd_fd);
return ret;
}