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/*
AVFS: A Virtual File System Library
Copyright (C) 1998-2001 Miklos Szeredi <miklos@szeredi.hu>
Copyright (C) 2006 Ralf Hoffmann (ralf@boomerangsworld.de)
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
*/
#include "internal.h"
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
struct tmpdir {
char *path;
int ctr;
};
static AV_LOCK_DECL(tmplock);
static struct tmpdir *tmpdir;
static int unlink_recursive(const char *file)
{
int res;
DIR *dirp;
struct dirent *ent;
char *name;
res = unlink(file);
if(res == 0)
return 0;
res = rmdir(file);
if(res == 0)
return 0;
dirp = opendir(file);
if(dirp == NULL)
return -1;
while((ent = readdir(dirp)) != NULL) {
name = ent->d_name;
if(name[0] != '.' || (name[1] && (name[1] != '.' || name[2]))) {
char *newname;
newname = av_stradd(NULL, file, "/", name, NULL);
unlink_recursive(newname);
av_free(newname);
}
}
closedir(dirp);
return rmdir(file);
}
void av_delete_tmpdir()
{
AV_LOCK(tmplock);
if(tmpdir != NULL) {
unlink_recursive(tmpdir->path);
av_free(tmpdir->path);
av_free(tmpdir);
tmpdir = NULL;
}
AV_UNLOCK(tmplock);
}
#ifdef HAVE_MKDTEMP
static int make_tmp_dir(char *path)
{
char *res;
res = mkdtemp(path);
if(res == NULL) {
av_log(AVLOG_ERROR, "mkdtemp failed: %s", strerror(errno));
return -EIO;
}
return 0;
}
#else /* HAVE_MKDTEMP */
static int make_tmp_dir(char *path)
{
int res;
mktemp(path);
if(path[0] == '\0') {
av_log(AVLOG_ERROR, "mktemp failed for temporary directory");
return -EIO;
}
res = mkdir(path, 0700);
if(res == -1) {
av_log(AVLOG_ERROR, "mkdir(%s) failed: %s", path, strerror(errno));
return -EIO;
}
return 0;
}
#endif /* HAVE_MKDTEMP */
int av_get_tmpfile(char **retp)
{
int res = 0;
char buf[64];
AV_LOCK(tmplock);
if(tmpdir == NULL) {
char *path;
path = av_strdup("/tmp/.avfs_tmp_XXXXXX");
res = make_tmp_dir(path);
if(res < 0)
av_free(path);
else {
AV_NEW(tmpdir);
tmpdir->path = path;
tmpdir->ctr = 0;
}
}
if(tmpdir != NULL) {
sprintf(buf, "/atmp%06i", tmpdir->ctr++);
*retp = av_stradd(NULL, tmpdir->path, buf, NULL);
}
AV_UNLOCK(tmplock);
return res;
}
void av_del_tmpfile(char *tmpf)
{
if(tmpf != NULL) {
if(unlink(tmpf) == -1)
rmdir(tmpf);
av_free(tmpf);
}
}
avoff_t av_tmp_free()
{
#ifdef HAVE_SYS_STATVFS_H
int res;
struct statvfs stbuf;
#endif
avoff_t freebytes = -1;
#ifdef HAVE_SYS_STATVFS_H
AV_LOCK(tmplock);
if(tmpdir != NULL) {
/* Check if fs supports df info (ramfs doesn't) */
res = statvfs(tmpdir->path, &stbuf);
if(res != -1 && stbuf.f_blocks != 0)
freebytes = (avoff_t) stbuf.f_bavail * (avoff_t) stbuf.f_frsize;
}
AV_UNLOCK(tmplock);
#endif
#if 0
if(freebytes != -1)
av_log(AVLOG_DEBUG, "free bytes in tmp directory: %lli", freebytes);
#endif
return freebytes;
}
avoff_t av_tmpfile_blksize(const char *tmpf)
{
int res;
struct stat stbuf;
if(tmpf == NULL)
return -1;
res = stat(tmpf, &stbuf);
if(res == 0) {
/* Ramfs returns 0 diskusage */
if(stbuf.st_blocks == 0)
return stbuf.st_size;
else
return stbuf.st_blocks * 512;
} else
return -1;
}
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