Imported from util-linux-2.10s tarball.

1 files changed, 218 insertions, 0 deletions

diff --git a/disk-utils/isosize.c b/disk-utils/isosize.c
new file mode 100644
index 000000000..bff45d923
--- /dev/null
+++ b/disk-utils/isosize.c
@@ -0,0 +1,218 @@
+/*
+ * isosize.c - Andries Brouwer, 000608
+ *
+ * use header info to find size of iso9660 file system
+ * output a number - useful in scripts
+ *
+ * Synopsis:
+ *    isosize [-x] [-d <num>] <filename>
+ *        where "-x" gives length in sectors and sector size while
+ *              without this argument the size is given in bytes
+ *        without "-x" gives length in bytes unless "-d <num>" is
+ *		given. In the latter case the length in bytes divided
+ *		by <num> is given
+ *
+ *  Version 2.03 2000/12/21
+ *     - add "-d <num>" option and use long long to fix things > 2 GB
+ *  Version 2.02 2000/10/11
+ *     - error messages on IO failures [D. Gilbert]
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "nls.h"
+
+#define ISODCL(from, to) (to - from + 1)
+
+int xflag;
+
+static int
+isonum_721 (unsigned char * p) {
+        return ((p[0] & 0xff)
+                | ((p[1] & 0xff) << 8));
+}
+
+static int
+isonum_722 (unsigned char * p) {
+        return ((p[1] & 0xff)
+                | ((p[0] & 0xff) << 8));
+}
+
+static int
+isonum_723 (unsigned char * p) {
+        int le = isonum_721 (p);
+        int be = isonum_722 (p+2);
+        if (xflag && le != be)
+		/* translation is useless */
+                fprintf(stderr, "723error: le=%d be=%d\n", le, be);
+        return (le);
+}
+
+static int
+isonum_731 (unsigned char * p) {
+    return ((p[0] & 0xff)
+            | ((p[1] & 0xff) << 8)
+            | ((p[2] & 0xff) << 16)
+            | ((p[3] & 0xff) << 24));
+}
+
+static int
+isonum_732 (unsigned char * p) {
+    return ((p[3] & 0xff)
+            | ((p[2] & 0xff) << 8)
+            | ((p[1] & 0xff) << 16)
+            | ((p[0] & 0xff) << 24));
+}
+
+
+static int
+isonum_733 (unsigned char * p) {
+    int le = isonum_731 (p);
+    int be = isonum_732 (p+4);
+    if (xflag && le != be)
+	    /* translation is useless */
+            fprintf(stderr, "733error: le=%d be=%d\n", le, be);
+    return (le);
+}
+
+struct iso_primary_descriptor {
+    unsigned char type                      [ISODCL (  1,   1)]; /* 711 */
+    unsigned char id                        [ISODCL (  2,   6)];
+    unsigned char version                   [ISODCL (  7,   7)]; /* 711 */
+    unsigned char unused1                   [ISODCL (  8,   8)];
+    unsigned char system_id                 [ISODCL (  9,  40)]; /* auchars */
+    unsigned char volume_id                 [ISODCL ( 41,  72)]; /* duchars */
+    unsigned char unused2                   [ISODCL ( 73,  80)];
+    unsigned char volume_space_size         [ISODCL ( 81,  88)]; /* 733 */
+    unsigned char unused3                   [ISODCL ( 89, 120)];
+    unsigned char volume_set_size           [ISODCL (121, 124)]; /* 723 */
+    unsigned char volume_sequence_number    [ISODCL (125, 128)]; /* 723 */
+    unsigned char logical_block_size        [ISODCL (129, 132)]; /* 723 */
+    unsigned char path_table_size           [ISODCL (133, 140)]; /* 733 */
+    unsigned char type_l_path_table         [ISODCL (141, 144)]; /* 731 */
+    unsigned char opt_type_l_path_table     [ISODCL (145, 148)]; /* 731 */
+    unsigned char type_m_path_table         [ISODCL (149, 152)]; /* 732 */
+    unsigned char opt_type_m_path_table     [ISODCL (153, 156)]; /* 732 */
+    unsigned char root_directory_record     [ISODCL (157, 190)]; /* 9.1 */
+    unsigned char volume_set_id             [ISODCL (191, 318)]; /* duchars */
+    unsigned char publisher_id              [ISODCL (319, 446)]; /* achars */
+    unsigned char preparer_id               [ISODCL (447, 574)]; /* achars */
+    unsigned char application_id            [ISODCL (575, 702)]; /* achars */
+    unsigned char copyright_file_id         [ISODCL (703, 739)]; /* 7.5 dchars */
+    unsigned char abstract_file_id          [ISODCL (740, 776)]; /* 7.5 dchars */
+    unsigned char bibliographic_file_id     [ISODCL (777, 813)]; /* 7.5 dchars */
+    unsigned char creation_date             [ISODCL (814, 830)]; /* 8.4.26.1 */
+    unsigned char modification_date         [ISODCL (831, 847)]; /* 8.4.26.1 */
+    unsigned char expiration_date           [ISODCL (848, 864)]; /* 8.4.26.1 */
+    unsigned char effective_date            [ISODCL (865, 881)]; /* 8.4.26.1 */
+    unsigned char file_structure_version    [ISODCL (882, 882)]; /* 711 */
+    unsigned char unused4                   [ISODCL (883, 883)];
+    unsigned char application_data          [ISODCL (884, 1395)];
+    unsigned char unused5                   [ISODCL (1396, 2048)];
+};
+
+const char *progname;
+int divisor = 0;
+
+static void
+isosize(char *filenamep) {
+	int fd, nsecs, ssize;
+	struct iso_primary_descriptor ipd;
+
+	if ((fd = open(filenamep, O_RDONLY)) < 0) {
+		perror(filenamep);
+		fprintf(stderr, _("%s: failed to open: %s\n"),
+			progname, filenamep);
+		exit(1);
+	}
+	if (lseek(fd, 16 << 11, 0) == (off_t)-1) {
+		perror("lseek");
+		fprintf(stderr, _("%s: seek error on %s\n"),
+			progname, filenamep);
+		exit(1);
+	}
+	if (read(fd, &ipd, sizeof(ipd)) < 0) {
+		perror("read");
+		fprintf(stderr, _("%s: read error on %s\n"),
+			progname, filenamep);
+		exit(1);
+	}
+
+	nsecs = isonum_733(ipd.volume_space_size);
+	ssize = isonum_723(ipd.logical_block_size); /* nowadays always 2048 */
+
+	if (xflag) {
+		printf (_("sector count: %d, sector size: %d\n"),
+			nsecs, ssize);
+	} else {
+		long long product = nsecs;
+
+		if (divisor == 0)
+			printf ("%lld\n", product * ssize);
+		else if (divisor == ssize)
+			printf ("%d\n", nsecs);
+		else
+			printf ("%lld\n", (product * ssize) / divisor);
+	}
+}
+
+int
+main(int argc, char * argv[]) {
+	int j, ct;
+	char *p;
+
+	progname = argv[0];
+	if ((p = strrchr(progname, '/')) != NULL)
+		progname = p+1;
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+
+	if (argc >= 2 &&
+	    (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version"))) {
+		printf(_("%s from %s\n"), progname, util_linux_version);
+		exit(0);
+	}
+
+	for (;;) {
+		int opt;
+
+		opt = getopt(argc, argv, "xd:");
+		if (opt < 0)
+			break;
+		switch (opt) {
+		case 'd':
+			divisor = atoi(optarg);
+			break;
+		case 'x':
+			xflag = 1;
+			break;
+		default:
+			fprintf(stderr,
+				_("%s: option parse error\n"), progname);
+			exit(1);
+		}
+	}
+
+	ct = argc - optind;
+
+	if (ct <= 0) {
+		fprintf(stderr, _("Usage: %s [-x] [-d <num>] iso9660-image\n"),
+			progname);
+		exit(1);
+	}
+
+	for (j = optind; j < argc; j++) {
+		if (ct > 1)
+			printf("%s: ", argv[j]);
+		isosize(argv[j]);
+	}
+
+	return 0;
+}