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-rw-r--r--minfo.c246
1 files changed, 167 insertions, 79 deletions
diff --git a/minfo.c b/minfo.c
index 05c4e9d..07a1773 100644
--- a/minfo.c
+++ b/minfo.c
@@ -24,13 +24,14 @@
#include "vfat.h"
#include "mtools.h"
#include "nameclash.h"
+#include "fsP.h"
static void usage(int ret) NORETURN;
static void usage(int ret)
{
- fprintf(stderr,
+ fprintf(stderr,
"Mtools version %s, dated %s\n", mversion, mdate);
- fprintf(stderr,
+ fprintf(stderr,
"Usage: %s [-v] drive\n", progname);
exit(ret);
}
@@ -44,9 +45,9 @@ static void displayInfosector(Stream_t *Stream, union bootsector *boot)
return;
infosec = (InfoSector_t *) safe_malloc(WORD(secsiz));
- force_read(Stream, (char *) infosec,
- (mt_off_t) WORD(secsiz) * WORD(ext.fat32.infoSector),
- WORD(secsiz));
+ force_pread(Stream, (char *) infosec,
+ (mt_off_t) WORD(secsiz) * WORD(ext.fat32.infoSector),
+ WORD(secsiz));
printf("\nInfosector:\n");
printf("signature=0x%08x\n", _DWORD(infosec->signature1));
if(_DWORD(infosec->count) != MAX32)
@@ -55,6 +56,12 @@ static void displayInfosector(Stream_t *Stream, union bootsector *boot)
printf("last allocated cluster=%u\n", _DWORD(infosec->pos));
}
+/*
+ * Number of hidden sector is only a 4 byte quantity if number of sectors is
+ */
+static uint32_t getHidden(union bootsector *boot) {
+ return WORD(psect) ? WORD(nhs) : DWORD(nhs);
+}
static void displayBPB(Stream_t *Stream, union bootsector *boot) {
struct label_blk_t *labelBlock;
@@ -66,15 +73,16 @@ static void displayBPB(Stream_t *Stream, union bootsector *boot) {
printf("cluster size: %d sectors\n", boot->boot.clsiz);
printf("reserved (boot) sectors: %d\n", WORD(nrsvsect));
printf("fats: %d\n", boot->boot.nfat);
- printf("max available root directory slots: %d\n",
+ printf("max available root directory slots: %d\n",
WORD(dirents));
printf("small size: %d sectors\n", WORD(psect));
printf("media descriptor byte: 0x%x\n", boot->boot.descr);
printf("sectors per fat: %d\n", WORD(fatlen));
printf("sectors per track: %d\n", WORD(nsect));
printf("heads: %d\n", WORD(nheads));
- printf("hidden sectors: %d\n", DWORD(nhs));
- printf("big size: %d sectors\n", DWORD(bigsect));
+ printf("hidden sectors: %d\n", getHidden(boot));
+ if(!WORD(psect))
+ printf("big size: %u sectors\n", DWORD(bigsect));
if(WORD(fatlen)) {
labelBlock = &boot->boot.ext.old.labelBlock;
@@ -83,20 +91,20 @@ static void displayBPB(Stream_t *Stream, union bootsector *boot) {
}
if(has_BPB4) {
- printf("physical drive id: 0x%x\n",
+ printf("physical drive id: 0x%x\n",
labelBlock->physdrive);
- printf("reserved=0x%x\n",
+ printf("reserved=0x%x\n",
labelBlock->reserved);
- printf("dos4=0x%x\n",
+ printf("dos4=0x%x\n",
labelBlock->dos4);
- printf("serial number: %08X\n",
+ printf("serial number: %08X\n",
_DWORD(labelBlock->serial));
- printf("disk label=\"%11.11s\"\n",
+ printf("disk label=\"%11.11s\"\n",
labelBlock->label);
- printf("disk type=\"%8.8s\"\n",
+ printf("disk type=\"%8.8s\"\n",
labelBlock->fat_type);
}
-
+
if(!WORD(fatlen)){
printf("Big fatlen=%u\n",
DWORD(ext.fat32.bigFat));
@@ -116,27 +124,144 @@ static void displayBPB(Stream_t *Stream, union bootsector *boot) {
}
}
+static int try(uint32_t tot_sectors, Fs_t *masterFs, Fs_t *tryFs,
+ struct device *master_dev, struct device *try_dev,
+ uint8_t *bootDescr) {
+ *tryFs = *masterFs;
+ *try_dev = *master_dev;
+ return calc_fs_parameters(try_dev, 0, tot_sectors,
+ tryFs, bootDescr);
+}
+
+static void print_mformat_commandline(const char *imgFile,
+ char drive,
+ struct device *dev,
+ union bootsector *boot,
+ int media,
+ int haveBPB) {
+ uint8_t size_code;
+ uint32_t sect_per_track;
+ uint32_t hidden;
+ uint32_t tot_sectors;
+ int tracks_match=0;
+ Fs_t masterFs, tryFs, actual;
+ struct device used_dev;
+ uint8_t tryMedia;
+ int bad;
+
+ sect_per_track = dev->sectors * dev->heads;
+ if(sect_per_track == 0)
+ return;
+
+ tot_sectors = parseFsParams(&actual, boot,
+ media | (haveBPB ? 0x100:0),
+ sect_per_track);
+ if(tot_sectors == 0)
+ return;
+
+ printf("mformat command line:\n mformat ");
+
+ if(haveBPB) {
+ if(media == 0xf0)
+ hidden = getHidden(boot);
+ else
+ hidden = 0;
+ size_code = (uint8_t) actual.sectorShift-7;
+ } else {
+ size_code=2;
+ hidden = 0;
+ }
+
+ if(tot_sectors ==
+ dev->tracks * sect_per_track - hidden % sect_per_track) {
+ tracks_match=1;
+ printf("-t %d ", dev->tracks);
+ } else {
+ printf("-T %d ", tot_sectors);
+ }
+ printf ("-h %d -s %d ", dev->heads, dev->sectors);
+ if(haveBPB && (hidden || !tracks_match))
+ printf("-H %d ", hidden);
+ used_dev=*dev;
+ if(size_code != 2) {
+ printf("-S %d ",size_code);
+ used_dev.ssize = size_code;
+ }
+
+ initFsForFormat(&masterFs);
+ setFsSectorSize(&masterFs, &used_dev, 0);
+
+ if(actual.num_fat != 2) {
+ masterFs.num_fat = actual.num_fat;
+ printf("-d %d ", actual.num_fat);
+ }
+
+ bad=try(tot_sectors, &masterFs, &tryFs, dev , &used_dev, &tryMedia);
+
+ if(bad || actual.dir_len != tryFs.dir_len) {
+ masterFs.dir_len = actual.dir_len;
+ printf("-r %d ", actual.dir_len);
+ bad = try(tot_sectors,
+ &masterFs, &tryFs, dev , &used_dev,
+ &tryMedia);
+ }
+
+ if(bad || actual.cluster_size != tryFs.cluster_size) {
+ masterFs.cluster_size = actual.cluster_size;
+ printf("-c %d ", actual.cluster_size);
+ bad = try(tot_sectors,
+ &masterFs, &tryFs, dev , &used_dev,
+ &tryMedia);
+ }
+
+ if(bad || actual.fat_start != tryFs.fat_start) {
+ masterFs.fat_start = actual.fat_start;
+ printf("-R %d ", actual.fat_start);
+ bad = try(tot_sectors,
+ &masterFs, &tryFs, dev , &used_dev,
+ &tryMedia);
+ }
+
+ if(bad || actual.fat_len != tryFs.fat_len) {
+ masterFs.fat_len = actual.fat_len;
+ printf("-L %d ", actual.fat_len);
+ bad = try(tot_sectors,
+ &masterFs, &tryFs, dev , &used_dev,
+ &tryMedia);
+ }
+#ifdef HAVE_ASSERT_H
+ assert(!bad);
+#endif
+ if((media & 0xff) != (tryMedia & 0xff))
+ printf("-m %d ", (media & 0xff));
+
+ if(actual.fat_bits == 32) {
+ if(actual.backupBoot != tryFs.backupBoot)
+ printf("-K %d ", actual.backupBoot);
+ }
+
+ if(imgFile != NULL)
+ printf("-i \"%s\" ", imgFile);
+ printf("%c:\n", ch_tolower(drive));
+ printf("\n");
+}
+
+
void minfo(int argc, char **argv, int type UNUSEDP) NORETURN;
void minfo(int argc, char **argv, int type UNUSEDP)
{
union bootsector boot;
char name[EXPAND_BUF];
- int media;
- int haveBPB;
- int size_code;
- int i;
struct device dev;
char drive;
int verbose=0;
int c;
Stream_t *Stream;
int have_drive = 0;
-
- unsigned long sect_per_track;
-
+ int ex=0;
char *imgFile=NULL;
-
+
if(helpFlag(argc, argv))
usage(0);
while ((c = getopt(argc, argv, "i:vh")) != EOF) {
@@ -156,6 +281,9 @@ void minfo(int argc, char **argv, int type UNUSEDP)
}
for(;optind <= argc; optind++) {
+ int media;
+ int haveBPB;
+
if(optind == argc) {
if(have_drive)
break;
@@ -167,13 +295,16 @@ void minfo(int argc, char **argv, int type UNUSEDP)
}
have_drive = 1;
- if(! (Stream = find_device(drive, O_RDONLY, &dev, &boot,
- name, &media, 0, NULL)))
- exit(1);
+ if(! (Stream = find_device(drive, O_RDONLY, &dev, &boot,
+ name, &media, 0, NULL))) {
+ fprintf(stderr, "Could not open drive %c:\n", drive);
+ ex=1;
+ continue;
+ }
haveBPB = media >= 0x100;
media = media & 0xff;
-
+
printf("device information:\n");
printf("===================\n");
printf("filename=\"%s\"\n", name);
@@ -182,78 +313,35 @@ void minfo(int argc, char **argv, int type UNUSEDP)
printf("cylinders: %d\n\n", dev.tracks);
printf("media byte: %02x\n\n", media & 0xff);
- sect_per_track = dev.sectors * dev.heads;
- if(sect_per_track != 0) {
- unsigned int hidden;
- unsigned long tot_sectors;
- int tracks_match=0;
- printf("mformat command line: mformat ");
-
- if(haveBPB) {
- int sector_size;
- tot_sectors = DWORD_S(bigsect);
- SET_INT(tot_sectors, WORD_S(psect));
- sector_size = WORD_S(secsiz);
- size_code=2;
- for(i=0; i<7; i++) {
- if(sector_size == 128 << i) {
- size_code = i;
- break;
- }
- }
- if(media == 0xf0)
- hidden = DWORD_S(nhs);
- else
- hidden = 0;
- } else {
- tot_sectors = dev.tracks * sect_per_track;
- size_code=2;
- hidden = 0;
- }
-
- if(tot_sectors ==
- dev.tracks * sect_per_track - hidden % sect_per_track) {
- tracks_match=1;
- printf("-t %d ", dev.tracks);
- } else {
- printf("-T %ld ", tot_sectors);
- }
- printf ("-h %d -s %d ", dev.heads, dev.sectors);
- if(haveBPB && (hidden || !tracks_match))
- printf("-H %d ", hidden);
- if(size_code != 2)
- printf("-S %d ",size_code);
- if(imgFile != NULL)
- printf("-i \"%s\" ", imgFile);
- printf("%c:\n", ch_tolower(drive));
- printf("\n");
- }
+ print_mformat_commandline(imgFile, drive,
+ &dev, &boot, media, haveBPB);
if(haveBPB || verbose)
displayBPB(Stream, &boot);
if(verbose) {
- int size;
+ uint16_t size;
+ ssize_t ssize;
unsigned char *buf;
printf("\n");
size = WORD_S(secsiz);
-
+
buf = (unsigned char *) malloc(size);
if(!buf) {
fprintf(stderr, "Out of memory error\n");
exit(1);
}
- size = READS(Stream, buf, (mt_off_t) 0, size);
- if(size < 0) {
+ ssize = PREADS(Stream, buf, 0, size);
+ if(ssize < 0) {
perror("read boot sector");
exit(1);
}
- print_sector("Boot sector hexdump", buf, size);
+ print_sector("Boot sector hexdump", buf, (uint16_t)ssize);
}
}
FREE(&Stream);
- exit(0);
+ exit(ex);
}
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