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-rw-r--r--packages/klibc/files/losetup.patch571
1 files changed, 571 insertions, 0 deletions
diff --git a/packages/klibc/files/losetup.patch b/packages/klibc/files/losetup.patch
new file mode 100644
index 0000000000..77049bd05f
--- /dev/null
+++ b/packages/klibc/files/losetup.patch
@@ -0,0 +1,571 @@
+Index: klibc-1.5/usr/utils/losetup.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ klibc-1.5/usr/utils/losetup.c 2008-03-07 23:13:38.635692852 +0100
+@@ -0,0 +1,485 @@
++/* Originally from Ted's losetup.c */
++
++#define LOOPMAJOR 7
++
++/*
++ * losetup.c - setup and control loop devices
++ */
++
++#include <stdio.h>
++#include <string.h>
++#include <ctype.h>
++#include <fcntl.h>
++#include <errno.h>
++#include <stdlib.h>
++#include <unistd.h>
++#include <sys/ioctl.h>
++#include <sys/stat.h>
++#include <sys/mman.h>
++#include <sys/sysmacros.h>
++#include <string.h>
++
++#include "loop.h"
++
++extern int verbose;
++extern char *progname;
++extern char *xstrdup (const char *s); /* not: #include "sundries.h" */
++extern void error (const char *fmt, ...); /* idem */
++
++/* caller guarantees n > 0 */
++void
++xstrncpy(char *dest, const char *src, size_t n) {
++ strncpy(dest, src, n-1);
++ dest[n-1] = 0;
++}
++
++
++static int
++loop_info64_to_old(const struct loop_info64 *info64, struct loop_info *info)
++{
++ memset(info, 0, sizeof(*info));
++ info->lo_number = info64->lo_number;
++ info->lo_device = info64->lo_device;
++ info->lo_inode = info64->lo_inode;
++ info->lo_rdevice = info64->lo_rdevice;
++ info->lo_offset = info64->lo_offset;
++ info->lo_encrypt_type = info64->lo_encrypt_type;
++ info->lo_encrypt_key_size = info64->lo_encrypt_key_size;
++ info->lo_flags = info64->lo_flags;
++ info->lo_init[0] = info64->lo_init[0];
++ info->lo_init[1] = info64->lo_init[1];
++ if (info->lo_encrypt_type == LO_CRYPT_CRYPTOAPI)
++ memcpy(info->lo_name, info64->lo_crypt_name, LO_NAME_SIZE);
++ else
++ memcpy(info->lo_name, info64->lo_file_name, LO_NAME_SIZE);
++ memcpy(info->lo_encrypt_key, info64->lo_encrypt_key, LO_KEY_SIZE);
++
++ /* error in case values were truncated */
++ if (info->lo_device != info64->lo_device ||
++ info->lo_rdevice != info64->lo_rdevice ||
++ info->lo_inode != info64->lo_inode ||
++ info->lo_offset != info64->lo_offset)
++ return -EOVERFLOW;
++
++ return 0;
++}
++
++
++static int
++show_loop(char *device) {
++ struct loop_info loopinfo;
++ struct loop_info64 loopinfo64;
++ int fd, errsv;
++
++ if ((fd = open(device, O_RDONLY)) < 0) {
++ int errsv = errno;
++ fprintf(stderr, "loop: can't open device %s: %s\n",
++ device, strerror (errsv));
++ return 2;
++ }
++
++ if (ioctl(fd, LOOP_GET_STATUS64, &loopinfo64) == 0) {
++
++ loopinfo64.lo_file_name[LO_NAME_SIZE-2] = '*';
++ loopinfo64.lo_file_name[LO_NAME_SIZE-1] = 0;
++ loopinfo64.lo_crypt_name[LO_NAME_SIZE-1] = 0;
++
++ printf("%s: [%04llx]:%llu (%s)",
++ device, loopinfo64.lo_device, loopinfo64.lo_inode,
++ loopinfo64.lo_file_name);
++
++ if (loopinfo64.lo_offset)
++ printf(", offset %lld", loopinfo64.lo_offset);
++
++ if (loopinfo64.lo_sizelimit)
++ printf(", sizelimit %lld", loopinfo64.lo_sizelimit);
++
++ if (loopinfo64.lo_encrypt_type ||
++ loopinfo64.lo_crypt_name[0]) {
++ char *e = loopinfo64.lo_crypt_name;
++
++ if (*e == 0 && loopinfo64.lo_encrypt_type == 1)
++ e = "XOR";
++ printf(", encryption %s (type %d)",
++ e, loopinfo64.lo_encrypt_type);
++ }
++ printf("\n");
++ close (fd);
++ return 0;
++ }
++
++ if (ioctl(fd, LOOP_GET_STATUS, &loopinfo) == 0) {
++ printf ("%s: [%04x]:%ld (%s)",
++ device, loopinfo.lo_device, loopinfo.lo_inode,
++ loopinfo.lo_name);
++
++ if (loopinfo.lo_offset)
++ printf(", offset %d", loopinfo.lo_offset);
++
++ if (loopinfo.lo_encrypt_type)
++ printf(", encryption type %d\n",
++ loopinfo.lo_encrypt_type);
++
++ printf("\n");
++ close (fd);
++ return 0;
++ }
++
++ errsv = errno;
++ fprintf(stderr, "loop: can't get info on device %s: %s\n",
++ device, strerror (errsv));
++ close (fd);
++ return 1;
++}
++
++int
++is_loop_device (const char *device) {
++ struct stat statbuf;
++
++ return (stat(device, &statbuf) == 0 &&
++ S_ISBLK(statbuf.st_mode) &&
++ major(statbuf.st_rdev) == LOOPMAJOR);
++}
++
++#define SIZE(a) (sizeof(a)/sizeof(a[0]))
++
++char *
++find_unused_loop_device (void) {
++ /* Just creating a device, say in /tmp, is probably a bad idea -
++ people might have problems with backup or so.
++ So, we just try /dev/loop[0-7]. */
++ char dev[20];
++ char *loop_formats[] = { "/dev/loop%d", "/dev/loop/%d" };
++ int i, j, fd, somedev = 0, someloop = 0, permission = 0;
++ struct stat statbuf;
++ struct loop_info loopinfo;
++
++ for (j = 0; j < SIZE(loop_formats); j++) {
++ for(i = 0; i < 256; i++) {
++ sprintf(dev, loop_formats[j], i);
++ if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
++ somedev++;
++ fd = open (dev, O_RDONLY);
++ if (fd >= 0) {
++ if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == 0)
++ someloop++; /* in use */
++ else if (errno == ENXIO) {
++ close (fd);
++ return xstrdup(dev);/* probably free */
++ }
++ close (fd);
++ } else if (errno == EACCES)
++ permission++;
++
++ continue;/* continue trying as long as devices exist */
++ }
++ break;
++ }
++ }
++
++ if (!somedev)
++ error("%s: could not find any device /dev/loop#", progname);
++ else if (!someloop && permission)
++ error("%s: no permission to look at /dev/loop#", progname);
++ else if (!someloop)
++ error(
++ "%s: Could not find any loop device. Maybe this kernel "
++ "does not know\n"
++ " about the loop device? (If so, recompile or "
++ "`modprobe loop'.)", progname);
++ else
++ error("%s: could not find any free loop device", progname);
++ return 0;
++}
++
++/*
++ * A function to read the passphrase either from the terminal or from
++ * an open file descriptor.
++ */
++static char *
++xgetpass(int pfd, const char *prompt) {
++ char *pass;
++ int buflen, i;
++
++ pass = NULL;
++ buflen = 0;
++ for (i=0; ; i++) {
++ if (i >= buflen-1) {
++ /* we're running out of space in the buffer.
++ * Make it bigger: */
++ char *tmppass = pass;
++ buflen += 128;
++ pass = realloc(tmppass, buflen);
++ if (pass == NULL) {
++ /* realloc failed. Stop reading. */
++ error("Out of memory while reading passphrase");
++ pass = tmppass; /* the old buffer hasn't changed */
++ break;
++ }
++ }
++ if (read(pfd, pass+i, 1) != 1 ||
++ pass[i] == '\n' || pass[i] == 0)
++ break;
++ }
++
++ if (pass == NULL)
++ return "";
++
++ pass[i] = 0;
++ return pass;
++}
++
++static int
++digits_only(const char *s) {
++ while (*s)
++ if (!isdigit(*s++))
++ return 0;
++ return 1;
++}
++
++int
++set_loop(const char *device, const char *file, unsigned long long offset,
++ const char *encryption, int pfd, int *loopro) {
++ struct loop_info64 loopinfo64;
++ int fd, ffd, mode, i;
++ char *pass;
++
++ mode = (*loopro ? O_RDONLY : O_RDWR);
++ if ((ffd = open(file, mode)) < 0) {
++ if (!*loopro && errno == EROFS)
++ ffd = open(file, mode = O_RDONLY);
++ if (ffd < 0) {
++ perror(file);
++ return 1;
++ }
++ }
++ if ((fd = open(device, mode)) < 0) {
++ perror (device);
++ return 1;
++ }
++ *loopro = (mode == O_RDONLY);
++
++ memset(&loopinfo64, 0, sizeof(loopinfo64));
++
++ xstrncpy(loopinfo64.lo_file_name, file, LO_NAME_SIZE);
++
++ if (encryption && *encryption) {
++ if (digits_only(encryption)) {
++ loopinfo64.lo_encrypt_type = atoi(encryption);
++ } else {
++ loopinfo64.lo_encrypt_type = LO_CRYPT_CRYPTOAPI;
++ snprintf(loopinfo64.lo_crypt_name, LO_NAME_SIZE,
++ "%s", encryption);
++ }
++ }
++
++ loopinfo64.lo_offset = offset;
++
++
++ switch (loopinfo64.lo_encrypt_type) {
++ case LO_CRYPT_NONE:
++ loopinfo64.lo_encrypt_key_size = 0;
++ break;
++ case LO_CRYPT_XOR:
++ pass = xgetpass(pfd, "Password: ");
++ goto gotpass;
++ default:
++ pass = xgetpass(pfd, "Password: ");
++ gotpass:
++ memset(loopinfo64.lo_encrypt_key, 0, LO_KEY_SIZE);
++ xstrncpy(loopinfo64.lo_encrypt_key, pass, LO_KEY_SIZE);
++ memset(pass, 0, strlen(pass));
++ loopinfo64.lo_encrypt_key_size = LO_KEY_SIZE;
++ }
++
++ if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
++ perror("ioctl: LOOP_SET_FD");
++ return 1;
++ }
++ close (ffd);
++
++ i = ioctl(fd, LOOP_SET_STATUS64, &loopinfo64);
++ if (i) {
++ struct loop_info loopinfo;
++ int errsv = errno;
++
++ i = loop_info64_to_old(&loopinfo64, &loopinfo);
++ if (i) {
++ errno = errsv;
++ perror("ioctl: LOOP_SET_STATUS64");
++ } else {
++ i = ioctl(fd, LOOP_SET_STATUS, &loopinfo);
++ if (i)
++ perror("ioctl: LOOP_SET_STATUS");
++ }
++ memset(&loopinfo, 0, sizeof(loopinfo));
++ }
++ memset(&loopinfo64, 0, sizeof(loopinfo64));
++
++ if (i) {
++ ioctl (fd, LOOP_CLR_FD, 0);
++ close (fd);
++ return 1;
++ }
++ close (fd);
++
++ if (verbose > 1)
++ printf("set_loop(%s,%s,%llu): success\n",
++ device, file, offset);
++ return 0;
++}
++
++int
++del_loop (const char *device) {
++ int fd;
++
++ if ((fd = open (device, O_RDONLY)) < 0) {
++ int errsv = errno;
++ fprintf(stderr, "loop: can't delete device %s: %s\n",
++ device, strerror (errsv));
++ return 1;
++ }
++ if (ioctl (fd, LOOP_CLR_FD, 0) < 0) {
++ perror ("ioctl: LOOP_CLR_FD");
++ return 1;
++ }
++ close (fd);
++ if (verbose > 1)
++ printf("del_loop(%s): success\n", device);
++ return 0;
++}
++
++
++#include <getopt.h>
++#include <stdarg.h>
++
++int verbose = 0;
++char *progname;
++
++static void
++usage(void) {
++ fprintf(stderr, "usage:\n\
++ %s loop_device # give info\n\
++ %s -d loop_device # delete\n\
++ %s -f # find unused\n\
++ %s [-e encryption] [-o offset] {-f|loop_device} file # setup\n",
++ progname, progname, progname, progname);
++ exit(1);
++}
++
++char *
++xstrdup (const char *s) {
++ char *t;
++
++ if (s == NULL)
++ return NULL;
++
++ t = strdup (s);
++
++ if (t == NULL) {
++ fprintf(stderr, "not enough memory");
++ exit(1);
++ }
++
++ return t;
++}
++
++void
++error (const char *fmt, ...) {
++ va_list args;
++
++ va_start (args, fmt);
++ vfprintf (stderr, fmt, args);
++ va_end (args);
++ fprintf (stderr, "\n");
++}
++
++int
++main(int argc, char **argv) {
++ char *p, *offset, *encryption, *passfd, *device, *file;
++ int delete, find, c;
++ int res = 0;
++ int ro = 0;
++ int pfd = -1;
++ unsigned long long off;
++
++
++ delete = find = 0;
++ off = 0;
++ offset = encryption = passfd = NULL;
++
++ progname = argv[0];
++ if ((p = strrchr(progname, '/')) != NULL)
++ progname = p+1;
++
++ while ((c = getopt(argc, argv, "de:E:fo:p:v")) != -1) {
++ switch (c) {
++ case 'd':
++ delete = 1;
++ break;
++ case 'E':
++ case 'e':
++ encryption = optarg;
++ break;
++ case 'f':
++ find = 1;
++ break;
++ case 'o':
++ offset = optarg;
++ break;
++ case 'p':
++ passfd = optarg;
++ break;
++ case 'v':
++ verbose = 1;
++ break;
++ default:
++ usage();
++ }
++ }
++
++ if (argc == 1) {
++ usage();
++ } else if (delete) {
++ if (argc != optind+1 || encryption || offset || find)
++ usage();
++ } else if (find) {
++ if (argc < optind || argc > optind+1)
++ usage();
++ } else {
++ if (argc < optind+1 || argc > optind+2)
++ usage();
++ }
++
++ if (find) {
++ device = find_unused_loop_device();
++ if (device == NULL)
++ return -1;
++ if (verbose)
++ printf("Loop device is %s\n", device);
++ if (argc == optind) {
++ printf("%s\n", device);
++ return 0;
++ }
++ file = argv[optind];
++ } else {
++ device = argv[optind];
++ if (argc == optind+1)
++ file = NULL;
++ else
++ file = argv[optind+1];
++ }
++
++ if (delete)
++ res = del_loop(device);
++ else if (file == NULL)
++ res = show_loop(device);
++ else {
++ if (offset && sscanf(offset, "%llu", &off) != 1)
++ usage();
++ if (passfd && sscanf(passfd, "%d", &pfd) != 1)
++ usage();
++ res = set_loop(device, file, off, encryption, pfd, &ro);
++ }
++ return res;
++}
+Index: klibc-1.5/usr/utils/loop.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ klibc-1.5/usr/utils/loop.h 2008-03-07 23:01:49.336694297 +0100
+@@ -0,0 +1,51 @@
++#define LO_CRYPT_NONE 0
++#define LO_CRYPT_XOR 1
++#define LO_CRYPT_DES 2
++#define LO_CRYPT_CRYPTOAPI 18
++
++#define LOOP_SET_FD 0x4C00
++#define LOOP_CLR_FD 0x4C01
++#define LOOP_SET_STATUS 0x4C02
++#define LOOP_GET_STATUS 0x4C03
++#define LOOP_SET_STATUS64 0x4C04
++#define LOOP_GET_STATUS64 0x4C05
++
++#define LO_NAME_SIZE 64
++#define LO_KEY_SIZE 32
++
++#include "my_dev_t.h"
++
++struct loop_info {
++ int lo_number;
++ my_dev_t lo_device;
++ unsigned long lo_inode;
++ my_dev_t lo_rdevice;
++ int lo_offset;
++ int lo_encrypt_type;
++ int lo_encrypt_key_size;
++ int lo_flags;
++ char lo_name[LO_NAME_SIZE];
++ unsigned char lo_encrypt_key[LO_KEY_SIZE];
++ unsigned long lo_init[2];
++ char reserved[4];
++};
++
++/*
++ * Where to get __u8, __u32, __u64? Let us use unsigned char/int/long long
++ * and get punished when someone comes with 128-bit long longs.
++ */
++struct loop_info64 {
++ unsigned long long lo_device;
++ unsigned long long lo_inode;
++ unsigned long long lo_rdevice;
++ unsigned long long lo_offset;
++ unsigned long long lo_sizelimit; /* bytes, 0 == max available */
++ unsigned int lo_number;
++ unsigned int lo_encrypt_type;
++ unsigned int lo_encrypt_key_size;
++ unsigned int lo_flags;
++ unsigned char lo_file_name[LO_NAME_SIZE];
++ unsigned char lo_crypt_name[LO_NAME_SIZE];
++ unsigned char lo_encrypt_key[LO_KEY_SIZE];
++ unsigned long long lo_init[2];
++};
+Index: klibc-1.5/usr/utils/my_dev_t.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ klibc-1.5/usr/utils/my_dev_t.h 2008-03-07 23:03:45.148693283 +0100
+@@ -0,0 +1,20 @@
++/* silliness to get dev_t defined as the kernel defines it */
++/* glibc uses a different dev_t */
++
++#include <linux/posix_types.h>
++#include <linux/version.h>
++
++#ifndef KERNEL_VERSION
++#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
++#endif
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(1,3,78)
++/* for i386 - alpha uses unsigned int */
++#define my_dev_t unsigned short
++#else
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68)
++#define my_dev_t __kernel_dev_t
++#else
++#define my_dev_t __kernel_old_dev_t
++#endif
++#endif
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