diff options
Diffstat (limited to 'util-linux/fdisk.c')
| -rw-r--r-- | util-linux/fdisk.c | 88 |
1 files changed, 51 insertions, 37 deletions
diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c index 4034ca555..7f046edfb 100644 --- a/util-linux/fdisk.c +++ b/util-linux/fdisk.c @@ -20,21 +20,22 @@ # define USE_FEATURE_FDISK_BLKSIZE(a) #endif -#define DEFAULT_SECTOR_SIZE 512 -#define MAX_SECTOR_SIZE 2048 -#define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */ -#define MAXIMUM_PARTS 60 +#define DEFAULT_SECTOR_SIZE 512 +#define DEFAULT_SECTOR_SIZE_STR "512" +#define MAX_SECTOR_SIZE 2048 +#define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */ +#define MAXIMUM_PARTS 60 -#define ACTIVE_FLAG 0x80 +#define ACTIVE_FLAG 0x80 -#define EXTENDED 0x05 -#define WIN98_EXTENDED 0x0f -#define LINUX_PARTITION 0x81 -#define LINUX_SWAP 0x82 -#define LINUX_NATIVE 0x83 -#define LINUX_EXTENDED 0x85 -#define LINUX_LVM 0x8e -#define LINUX_RAID 0xfd +#define EXTENDED 0x05 +#define WIN98_EXTENDED 0x0f +#define LINUX_PARTITION 0x81 +#define LINUX_SWAP 0x82 +#define LINUX_NATIVE 0x83 +#define LINUX_EXTENDED 0x85 +#define LINUX_LVM 0x8e +#define LINUX_RAID 0xfd enum { @@ -290,12 +291,25 @@ struct globals { unsigned user_set_sector_size; unsigned sector_offset; // = 1; unsigned g_heads, g_sectors, g_cylinders; - enum label_type current_label_type; + smallint /* enum label_type */ current_label_type; smallint display_in_cyl_units; // = 1; #if ENABLE_FEATURE_OSF_LABEL smallint possibly_osf_label; #endif + smallint listing; /* no aborts for fdisk -l */ + smallint dos_compatible_flag; // = 1; +#if ENABLE_FEATURE_FDISK_WRITABLE + //int dos_changed; + smallint nowarn; /* no warnings for fdisk -l/-s */ +#endif + int ext_index; /* the prime extended partition */ + unsigned user_cylinders, user_heads, user_sectors; + unsigned pt_heads, pt_sectors; + unsigned kern_heads, kern_sectors; + ullong extended_offset; /* offset of link pointers */ + ullong total_number_of_sectors; + jmp_buf listingbuf; char line_buffer[80]; char partname_buffer[80]; @@ -319,6 +333,19 @@ struct globals { #define current_label_type (G.current_label_type ) #define display_in_cyl_units (G.display_in_cyl_units) #define possibly_osf_label (G.possibly_osf_label ) +#define listing (G.listing ) +#define dos_compatible_flag (G.dos_compatible_flag ) +#define nowarn (G.nowarn ) +#define ext_index (G.ext_index ) +#define user_cylinders (G.user_cylinders ) +#define user_heads (G.user_heads ) +#define user_sectors (G.user_sectors ) +#define pt_heads (G.pt_heads ) +#define pt_sectors (G.pt_sectors ) +#define kern_heads (G.kern_heads ) +#define kern_sectors (G.kern_sectors ) +#define extended_offset (G.extended_offset ) +#define total_number_of_sectors (G.total_number_of_sectors) #define listingbuf (G.listingbuf) #define line_buffer (G.line_buffer) #define partname_buffer (G.partname_buffer) @@ -331,6 +358,7 @@ struct globals { g_partitions = 4; \ display_in_cyl_units = 1; \ units_per_sector = 1; \ + dos_compatible_flag = 1; \ } while (0) @@ -661,21 +689,6 @@ get_nr_sects(const struct partition *p) return read4_little_endian(p->size4); } -static int ext_index; /* the prime extended partition */ -static smallint listing; /* no aborts for fdisk -l */ -static smallint dos_compatible_flag = 1; -#if ENABLE_FEATURE_FDISK_WRITABLE -//static int dos_changed; -static smallint nowarn; /* no warnings for fdisk -l/-s */ -#endif - -static unsigned user_cylinders, user_heads, user_sectors; -static unsigned pt_heads, pt_sectors; -static unsigned kern_heads, kern_sectors; - -static ullong extended_offset; /* offset of link pointers */ -static ullong total_number_of_sectors; - static void fdisk_fatal(const char *why) { if (listing) { @@ -706,8 +719,7 @@ static void write_sector(ullong secno, char *buf) { seek_sector(secno); - if (write(dev_fd, buf, sector_size) != sector_size) - fdisk_fatal(unable_to_write); + xwrite(dev_fd, buf, sector_size); } #endif @@ -716,9 +728,10 @@ static void read_pte(struct pte *pe, ullong offset) { pe->offset = offset; - pe->sectorbuffer = xmalloc(sector_size); + pe->sectorbuffer = xzalloc(sector_size); seek_sector(offset); - if (read(dev_fd, pe->sectorbuffer, sector_size) != sector_size) + /* xread would make us abort - bad for fdisk -l */ + if (full_read(dev_fd, pe->sectorbuffer, sector_size) != sector_size) fdisk_fatal(unable_to_read); #if ENABLE_FEATURE_FDISK_WRITABLE pe->changed = 0; @@ -1167,8 +1180,9 @@ get_sectorsize(void) if (ioctl(dev_fd, BLKSSZGET, &arg) == 0) sector_size = arg; if (sector_size != DEFAULT_SECTOR_SIZE) - printf("Note: sector size is %d (not %d)\n", - sector_size, DEFAULT_SECTOR_SIZE); + printf("Note: sector size is %d " + "(not " DEFAULT_SECTOR_SIZE_STR ")\n", + sector_size); } } @@ -1302,7 +1316,7 @@ static int get_boot(void) printf("'%s' is opened for read only\n", disk_device); } xmove_fd(fd, dev_fd); - if (512 != read(dev_fd, MBRbuffer, 512)) { + if (512 != full_read(dev_fd, MBRbuffer, 512)) { if (what == TRY_ONLY) { close_dev_fd(); return 1; @@ -1313,7 +1327,7 @@ static int get_boot(void) fd = open(disk_device, O_RDONLY); if (fd < 0) return 1; - if (512 != read(fd, MBRbuffer, 512)) { + if (512 != full_read(fd, MBRbuffer, 512)) { close(fd); return 1; } |