diff options
Diffstat (limited to 'package/heirloom-cpio/src/ib_read.c')
-rw-r--r-- | package/heirloom-cpio/src/ib_read.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/package/heirloom-cpio/src/ib_read.c b/package/heirloom-cpio/src/ib_read.c new file mode 100644 index 000000000..3794f3e95 --- /dev/null +++ b/package/heirloom-cpio/src/ib_read.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2003 Gunnar Ritter + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute + * it freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source distribution. + */ +/* Sccsid @(#)ib_read.c 1.2 (gritter) 4/17/03 */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> + +#include "iblok.h" + +int +ib_read(struct iblok *ip) +{ + ssize_t sz; + + do { + if ((sz = read(ip->ib_fd, ip->ib_blk, ip->ib_blksize)) > 0) { + ip->ib_endoff += sz; + ip->ib_cur = ip->ib_blk; + ip->ib_end = &ip->ib_blk[sz]; + return *ip->ib_cur++ & 0377; + } + } while (sz < 0 && errno == EINTR); + if (sz < 0) + ip->ib_errno = errno; + ip->ib_cur = ip->ib_end = NULL; + return EOF; +} |