int
decompress_file(const char *path_in, const char *path_out, mode_t mode_out)
{
int fdi = open(path_in, O_RDONLY | O_CLOEXEC);
if (fdi < 0)
{
perror_msg("Could not open file: %s", path_in);
return -1;
}
int fdo = open(path_out, O_WRONLY | O_CLOEXEC | O_EXCL | O_CREAT, mode_out);
if (fdo < 0)
{
close(fdi);
perror_msg("Could not create file: %s", path_out);
return -1;
}
int ret = decompress_fd(fdi, fdo);
close(fdi);
close(fdo);
if (ret != 0)
unlink(path_out);
return ret;
}
int
decompress_file_ext_at(const char *path_in, int dir_fd, const char *path_out, mode_t mode_out,
uid_t uid, gid_t gid, int src_flags, int dst_flags)
{
int fdi = open(path_in, src_flags);
if (fdi < 0)
{
perror_msg("Could not open file: %s", path_in);
return -1;
}
int fdo = openat(dir_fd, path_out, dst_flags, mode_out);
if (fdo < 0)
{
close(fdi);
perror_msg("Could not create file: %s", path_out);
return -1;
}
int ret = decompress_fd(fdi, fdo);
close(fdi);
if (uid != (uid_t)-1L)
{
if (fchown(fdo, uid, gid) == -1)
{
perror_msg("Can't change ownership of '%s' to %lu:%lu", path_out, (long)uid, (long)gid);
ret = -1;
}
}
close(fdo);
if (ret != 0)
unlinkat(dir_fd, path_out, /*only files*/0);
return ret;
}
