+++ /dev/null
-/*
- * Copyright (C) 2006-2010 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
-
-#include <unistd.h>
-#include <assert.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-
-#include "gcc-compat.h"
-#include "error.h"
-#include "string.h"
-
-/**
- * Call a function for each subdirectory of the current working directory.
- *
- * \param dirname The directory to traverse.
- * \param func The function to call for each subdirecrtory.
- * \param private_data Pointer to an arbitrary data structure.
- *
- * For each top-level directory under \a dirname, the supplied function \a func is
- * called. The full path of the subdirectory and the \a private_data pointer
- * are passed to \a func.
- *
- * \return This function returns immediately if \a func returned a negative
- * value. In this case \a func must set error_txt and this negative value is
- * returned to the caller. Otherwise the function returns when all
- * subdirectories have been passed to \a func.
- */
-
-int for_each_subdir(int (*func)(const char *, void *), void *private_data)
-{
- struct dirent *entry;
- int ret;
- DIR *dir = opendir(".");
-
- if (!dir)
- return -ERRNO_TO_DSS_ERROR(errno);
- while ((entry = readdir(dir))) {
- mode_t m;
- struct stat s;
-
- if (!strcmp(entry->d_name, "."))
- continue;
- if (!strcmp(entry->d_name, ".."))
- continue;
- ret = lstat(entry->d_name, &s) == -1;
- if (ret == -1) {
- ret = -ERRNO_TO_DSS_ERROR(errno);
- goto out;
- }
- m = s.st_mode;
- if (!S_ISDIR(m))
- continue;
- ret = func(entry->d_name, private_data);
- if (ret < 0)
- goto out;
- }
- ret = 1;
-out:
- closedir(dir);
- return ret;
-}
-/**
- * Wrapper for chdir(2).
- *
- * \param path The specified directory.
- *
- * \return Standard.
- */
-int dss_chdir(const char *path)
-{
- if (chdir(path) >= 0)
- return 1;
- return -ERRNO_TO_DSS_ERROR(errno);
-}
-
-/**
- * Set a file descriptor to non-blocking mode.
- *
- * \param fd The file descriptor.
- *
- * \return Standard.
- */
-__must_check int mark_fd_nonblocking(int fd)
-{
- int flags = fcntl(fd, F_GETFL);
- if (flags < 0)
- return -ERRNO_TO_DSS_ERROR(errno);
- flags = fcntl(fd, F_SETFL, ((long)flags) | O_NONBLOCK);
- if (flags < 0)
- return -ERRNO_TO_DSS_ERROR(errno);
- return 1;
-}
-
-/**
- * dss' wrapper for select(2).
- *
- * It calls select(2) (with no exceptfds) and starts over if select() was
- * interrupted by a signal.
- *
- * \param n The highest-numbered descriptor in any of the two sets, plus 1.
- * \param readfds fds that should be checked for readability.
- * \param writefds fds that should be checked for writablility.
- * \param timeout_tv upper bound on the amount of time elapsed before select()
- * returns.
- *
- * \return The return value of the underlying select() call on success, the
- * negative system error code on errors.
- *
- * All arguments are passed verbatim to select(2).
- * \sa select(2) select_tut(2).
- */
-int dss_select(int n, fd_set *readfds, fd_set *writefds,
- struct timeval *timeout_tv)
-{
- int ret, err;
- do {
- ret = select(n, readfds, writefds, NULL, timeout_tv);
- err = errno;
- } while (ret < 0 && err == EINTR);
- if (ret < 0)
- return -ERRNO_TO_DSS_ERROR(errno);
- return ret;
-}