diff options
Diffstat (limited to 'sources')
| -rw-r--r-- | sources/cramfs.patch | 1269 |
1 files changed, 1269 insertions, 0 deletions
diff --git a/sources/cramfs.patch b/sources/cramfs.patch new file mode 100644 index 000000000..1f6f01556 --- /dev/null +++ b/sources/cramfs.patch @@ -0,0 +1,1269 @@ +--- cramfs-1.1.orig/cramfsck.c 2002-02-22 17:00:42.000000000 -0700 ++++ cramfs-1.1/cramfsck.c 2002-12-21 01:25:17.000000000 -0700 +@@ -51,10 +51,11 @@ + #include <utime.h> + #include <sys/ioctl.h> + #define _LINUX_STRING_H_ +-#include <linux/fs.h> +-#include <linux/cramfs_fs.h> ++#include "linux/cramfs_fs.h" + #include <zlib.h> + ++#define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg) */ ++ + /* Exit codes used by fsck-type programs */ + #define FSCK_OK 0 /* No errors */ + #define FSCK_NONDESTRUCT 1 /* File system errors corrected */ +@@ -75,7 +76,7 @@ + static int opt_verbose = 0; /* 1 = verbose (-v), 2+ = very verbose (-vv) */ + #ifdef INCLUDE_FS_TESTS + static int opt_extract = 0; /* extract cramfs (-x) */ +-static char *extract_dir = "root"; /* extraction directory (-x) */ ++static char *extract_dir = "/"; /* extraction directory (-x) */ + static uid_t euid; /* effective UID */ + + /* (cramfs_super + start) <= start_dir < end_dir <= start_data <= end_data */ +@@ -155,7 +156,7 @@ + } + + if (*length < sizeof(struct cramfs_super)) { +- die(FSCK_UNCORRECTED, 0, "file length too short"); ++ die(FSCK_UNCORRECTED, 0, "filesystem smaller than a cramfs superblock!"); + } + + /* find superblock */ +@@ -190,7 +191,8 @@ + die(FSCK_UNCORRECTED, 0, "zero file count"); + } + if (*length < super.size) { +- die(FSCK_UNCORRECTED, 0, "file length too short"); ++ die(FSCK_UNCORRECTED, 0, "file length too short, %lu is smaller than %lu", ++ *length, super.size); + } + else if (*length > super.size) { + fprintf(stderr, "warning: file extends past end of filesystem\n"); +@@ -267,11 +269,11 @@ + #ifdef INCLUDE_FS_TESTS + static void print_node(char type, struct cramfs_inode *i, char *name) + { +- char info[10]; ++ char info[11]; + + if (S_ISCHR(i->mode) || (S_ISBLK(i->mode))) { + /* major/minor numbers can be as high as 2^12 or 4096 */ +- snprintf(info, 10, "%4d,%4d", major(i->size), minor(i->size)); ++ snprintf(info, 11, "%4d,%4d", major(i->size), minor(i->size)); + } + else { + /* size be as high as 2^24 or 16777216 */ +@@ -445,8 +447,10 @@ + } + /* TODO: Do we need to check end_dir for empty case? */ + memcpy(newpath, path, pathlen); +- newpath[pathlen] = '/'; +- pathlen++; ++ if (pathlen > 1) { ++ newpath[pathlen] = '/'; ++ pathlen++; ++ } + if (opt_verbose) { + print_node('d', i, path); + } +--- cramfs-1.1.orig/device_table.txt 1969-12-31 17:00:00.000000000 -0700 ++++ cramfs-1.1/device_table.txt 2003-01-01 05:13:44.000000000 -0700 +@@ -0,0 +1,129 @@ ++# When building a target filesystem, it is desirable to not have to ++# become root and then run 'mknod' a thousand times. Using a device ++# table you can create device nodes and directories "on the fly". ++# ++# This is a sample device table file for use with mkcramfs. You can ++# do all sorts of interesting things with a device table file. For ++# example, if you want to adjust the permissions on a particular file ++# you can just add an entry like: ++# /sbin/foobar f 2755 0 0 - - - - - ++# and (assuming the file /sbin/foobar exists) it will be made setuid ++# root (regardless of what its permissions are on the host filesystem. ++# Furthermore, you can use a single table entry to create a many device ++# minors. For example, if I wanted to create /dev/hda and /dev/hda[0-15] ++# I could just use the following two table entries: ++# /dev/hda b 640 0 0 3 0 0 0 - ++# /dev/hda b 640 0 0 3 1 1 1 15 ++# ++# Device table entries take the form of: ++# <name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++# where name is the file name, type can be one of: ++# f A regular file ++# d Directory ++# c Character special device file ++# b Block special device file ++# p Fifo (named pipe) ++# uid is the user id for the target file, gid is the group id for the ++# target file. The rest of the entries (major, minor, etc) apply only ++# to device special files. ++ ++# Have fun ++# -Erik Andersen <andersen@codepoet.org> ++# ++ ++#<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++/dev d 755 0 0 - - - - - ++/dev/mem c 640 0 0 1 1 0 0 - ++/dev/kmem c 640 0 0 1 2 0 0 - ++/dev/null c 640 0 0 1 3 0 0 - ++/dev/zero c 640 0 0 1 5 0 0 - ++/dev/random c 640 0 0 1 8 0 0 - ++/dev/urandom c 640 0 0 1 9 0 0 - ++/dev/tty c 666 0 0 5 0 0 0 - ++/dev/tty c 666 0 0 4 0 0 1 6 ++/dev/console c 640 0 0 5 1 0 0 - ++/dev/ram b 640 0 0 1 1 0 0 - ++/dev/ram b 640 0 0 1 0 0 1 4 ++/dev/loop b 640 0 0 7 0 0 1 2 ++/dev/ptmx c 666 0 0 5 2 0 0 - ++#/dev/ttyS c 640 0 0 4 64 0 1 4 ++#/dev/psaux c 640 0 0 10 1 0 0 - ++#/dev/rtc c 640 0 0 10 135 0 0 - ++ ++# Adjust permissions on some normal files ++#/etc/shadow f 600 0 0 - - - - - ++#/bin/tinylogin f 4755 0 0 - - - - - ++ ++# User-mode Linux stuff ++/dev/ubda b 640 0 0 98 0 0 0 - ++/dev/ubda b 640 0 0 98 1 1 1 15 ++ ++# IDE Devices ++/dev/hda b 640 0 0 3 0 0 0 - ++/dev/hda b 640 0 0 3 1 1 1 15 ++/dev/hdb b 640 0 0 3 64 0 0 - ++/dev/hdb b 640 0 0 3 65 1 1 15 ++#/dev/hdc b 640 0 0 22 0 0 0 - ++#/dev/hdc b 640 0 0 22 1 1 1 15 ++#/dev/hdd b 640 0 0 22 64 0 0 - ++#/dev/hdd b 640 0 0 22 65 1 1 15 ++#/dev/hde b 640 0 0 33 0 0 0 - ++#/dev/hde b 640 0 0 33 1 1 1 15 ++#/dev/hdf b 640 0 0 33 64 0 0 - ++#/dev/hdf b 640 0 0 33 65 1 1 15 ++#/dev/hdg b 640 0 0 34 0 0 0 - ++#/dev/hdg b 640 0 0 34 1 1 1 15 ++#/dev/hdh b 640 0 0 34 64 0 0 - ++#/dev/hdh b 640 0 0 34 65 1 1 15 ++ ++# SCSI Devices ++#/dev/sda b 640 0 0 8 0 0 0 - ++#/dev/sda b 640 0 0 8 1 1 1 15 ++#/dev/sdb b 640 0 0 8 16 0 0 - ++#/dev/sdb b 640 0 0 8 17 1 1 15 ++#/dev/sdc b 640 0 0 8 32 0 0 - ++#/dev/sdc b 640 0 0 8 33 1 1 15 ++#/dev/sdd b 640 0 0 8 48 0 0 - ++#/dev/sdd b 640 0 0 8 49 1 1 15 ++#/dev/sde b 640 0 0 8 64 0 0 - ++#/dev/sde b 640 0 0 8 65 1 1 15 ++#/dev/sdf b 640 0 0 8 80 0 0 - ++#/dev/sdf b 640 0 0 8 81 1 1 15 ++#/dev/sdg b 640 0 0 8 96 0 0 - ++#/dev/sdg b 640 0 0 8 97 1 1 15 ++#/dev/sdh b 640 0 0 8 112 0 0 - ++#/dev/sdh b 640 0 0 8 113 1 1 15 ++#/dev/sg c 640 0 0 21 0 0 1 15 ++#/dev/scd b 640 0 0 11 0 0 1 15 ++#/dev/st c 640 0 0 9 0 0 1 8 ++#/dev/nst c 640 0 0 9 128 0 1 8 ++#/dev/st c 640 0 0 9 32 1 1 4 ++#/dev/st c 640 0 0 9 64 1 1 4 ++#/dev/st c 640 0 0 9 96 1 1 4 ++ ++# Floppy disk devices ++#/dev/fd b 640 0 0 2 0 0 1 2 ++#/dev/fd0d360 b 640 0 0 2 4 0 0 - ++#/dev/fd1d360 b 640 0 0 2 5 0 0 - ++#/dev/fd0h1200 b 640 0 0 2 8 0 0 - ++#/dev/fd1h1200 b 640 0 0 2 9 0 0 - ++#/dev/fd0u1440 b 640 0 0 2 28 0 0 - ++#/dev/fd1u1440 b 640 0 0 2 29 0 0 - ++#/dev/fd0u2880 b 640 0 0 2 32 0 0 - ++#/dev/fd1u2880 b 640 0 0 2 33 0 0 - ++ ++# All the proprietary cdrom devices in the world ++#/dev/aztcd b 640 0 0 29 0 0 0 - ++#/dev/bpcd b 640 0 0 41 0 0 0 - ++#/dev/capi20 c 640 0 0 68 0 0 1 2 ++#/dev/cdu31a b 640 0 0 15 0 0 0 - ++#/dev/cdu535 b 640 0 0 24 0 0 0 - ++#/dev/cm206cd b 640 0 0 32 0 0 0 - ++#/dev/sjcd b 640 0 0 18 0 0 0 - ++#/dev/sonycd b 640 0 0 15 0 0 0 - ++#/dev/gscd b 640 0 0 16 0 0 0 - ++#/dev/sbpcd b 640 0 0 25 0 0 0 - ++#/dev/sbpcd b 640 0 0 25 0 0 1 4 ++#/dev/mcd b 640 0 0 23 0 0 0 - ++#/dev/optcd b 640 0 0 17 0 0 0 - ++ +--- cramfs-1.1.orig/mkcramfs.c 2002-02-20 01:03:32.000000000 -0700 ++++ cramfs-1.1/mkcramfs.c 2002-12-21 01:25:17.000000000 -0700 +@@ -1,3 +1,4 @@ ++/* vi: set sw=8 ts=8: */ + /* + * mkcramfs - make a cramfs file system + * +@@ -16,12 +17,21 @@ + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ * ++ * Added device table support (code taken from mkfs.jffs2.c, credit to ++ * Erik Andersen <andersen@codepoet.org>) as well as an option to squash ++ * permissions. - Russ Dill <Russ.Dill@asu.edu> September 2002 ++ * ++ * Reworked, cleaned up, and updated for cramfs-1.1, December 2002 ++ * - Erik Andersen <andersen@codepoet.org> ++ * + */ + + /* + * If you change the disk format of cramfs, please update fs/cramfs/README. + */ + ++#define _GNU_SOURCE + #include <sys/types.h> + #include <stdio.h> + #include <sys/stat.h> +@@ -33,8 +43,15 @@ + #include <errno.h> + #include <string.h> + #include <stdarg.h> ++#include <libgen.h> ++#include <ctype.h> ++#include <assert.h> ++#include <getopt.h> + #include <linux/cramfs_fs.h> + #include <zlib.h> ++#ifdef DMALLOC ++#include <dmalloc.h> ++#endif + + /* Exit codes used by mkfs-type programs */ + #define MKFS_OK 0 /* No errors */ +@@ -71,11 +88,17 @@ + + (1 << CRAMFS_SIZE_WIDTH) - 1 /* filesize */ \ + + (1 << CRAMFS_SIZE_WIDTH) * 4 / PAGE_CACHE_SIZE /* block pointers */ ) + ++ ++/* The kernel assumes PAGE_CACHE_SIZE as block size. */ ++#define PAGE_CACHE_SIZE (4096) ++ ++ + static const char *progname = "mkcramfs"; + static unsigned int blksize = PAGE_CACHE_SIZE; + static long total_blocks = 0, total_nodes = 1; /* pre-count the root node */ + static int image_length = 0; + ++ + /* + * If opt_holes is set, then mkcramfs can create explicit holes in the + * data, which saves 26 bytes per hole (which is a lot smaller a +@@ -91,10 +114,12 @@ + static int opt_holes = 0; + static int opt_pad = 0; + static int opt_verbose = 0; ++static int opt_squash = 0; + static char *opt_image = NULL; + static char *opt_name = NULL; + + static int warn_dev, warn_gid, warn_namelen, warn_skip, warn_size, warn_uid; ++static const char *const memory_exhausted = "memory exhausted"; + + /* In-core version of inode / directory entry. */ + struct entry { +@@ -123,7 +148,7 @@ + { + FILE *stream = status ? stderr : stdout; + +- fprintf(stream, "usage: %s [-h] [-e edition] [-i file] [-n name] dirname outfile\n" ++ fprintf(stream, "usage: %s [-h] [-e edition] [-i file] [-n name] [-D file] dirname outfile\n" + " -h print this help\n" + " -E make all warnings errors (non-zero exit status)\n" + " -e edition set edition number (part of fsid)\n" +@@ -133,39 +158,157 @@ + " -s sort directory entries (old option, ignored)\n" + " -v be more verbose\n" + " -z make explicit holes (requires >= 2.3.39)\n" +- " dirname root of the directory tree to be compressed\n" ++ " -D Use the named FILE as a device table file\n" ++ " -q squash permissions (make everything owned by root)\n" ++ " dirname root of the filesystem to be compressed\n" + " outfile output file\n", progname, PAD_SIZE); + + exit(status); + } + +-static void die(int status, int syserr, const char *fmt, ...) ++static void verror_msg(const char *s, va_list p) ++{ ++ fflush(stdout); ++ fprintf(stderr, "mkcramfs: "); ++ vfprintf(stderr, s, p); ++} ++ ++static void vperror_msg(const char *s, va_list p) ++{ ++ int err = errno; ++ ++ if (s == 0) ++ s = ""; ++ verror_msg(s, p); ++ if (*s) ++ s = ": "; ++ fprintf(stderr, "%s%s\n", s, strerror(err)); ++} ++ ++static void perror_msg(const char *s, ...) ++{ ++ va_list p; ++ ++ va_start(p, s); ++ vperror_msg(s, p); ++ va_end(p); ++} ++ ++static void error_msg_and_die(const char *s, ...) ++{ ++ va_list p; ++ ++ va_start(p, s); ++ verror_msg(s, p); ++ va_end(p); ++ putc('\n', stderr); ++ exit(MKFS_ERROR); ++} ++ ++static void perror_msg_and_die(const char *s, ...) ++{ ++ va_list p; ++ ++ va_start(p, s); ++ vperror_msg(s, p); ++ va_end(p); ++ exit(MKFS_ERROR); ++} ++#ifndef DMALLOC ++extern char *xstrdup(const char *s) ++{ ++ char *t; ++ ++ if (s == NULL) ++ return NULL; ++ t = strdup(s); ++ if (t == NULL) ++ error_msg_and_die(memory_exhausted); ++ return t; ++} ++ ++extern void *xmalloc(size_t size) ++{ ++ void *ptr = malloc(size); ++ ++ if (ptr == NULL && size != 0) ++ error_msg_and_die(memory_exhausted); ++ return ptr; ++} ++ ++extern void *xcalloc(size_t nmemb, size_t size) ++{ ++ void *ptr = calloc(nmemb, size); ++ ++ if (ptr == NULL && nmemb != 0 && size != 0) ++ error_msg_and_die(memory_exhausted); ++ return ptr; ++} ++ ++extern void *xrealloc(void *ptr, size_t size) ++{ ++ ptr = realloc(ptr, size); ++ if (ptr == NULL && size != 0) ++ error_msg_and_die(memory_exhausted); ++ return ptr; ++} ++#endif ++ ++static FILE *xfopen(const char *path, const char *mode) + { +- va_list arg_ptr; +- int save = errno; ++ FILE *fp; ++ ++ if ((fp = fopen(path, mode)) == NULL) ++ perror_msg_and_die("%s", path); ++ return fp; ++} + +- fflush(0); +- va_start(arg_ptr, fmt); +- fprintf(stderr, "%s: ", progname); +- vfprintf(stderr, fmt, arg_ptr); +- if (syserr) { +- fprintf(stderr, ": %s", strerror(save)); ++extern int xopen(const char *pathname, int flags, mode_t mode) ++{ ++ int ret; ++ ++ if (flags & O_CREAT) ++ ret = open(pathname, flags, mode); ++ else ++ ret = open(pathname, flags); ++ if (ret == -1) { ++ perror_msg_and_die("%s", pathname); + } +- fprintf(stderr, "\n"); +- va_end(arg_ptr); +- exit(status); ++ return ret; + } + ++extern char *xreadlink(const char *path) ++{ ++ static const int GROWBY = 80; /* how large we will grow strings by */ ++ ++ char *buf = NULL; ++ int bufsize = 0, readsize = 0; ++ ++ do { ++ buf = xrealloc(buf, bufsize += GROWBY); ++ readsize = readlink(path, buf, bufsize); /* 1st try */ ++ if (readsize == -1) { ++ perror_msg("%s:%s", progname, path); ++ return NULL; ++ } ++ } ++ while (bufsize < readsize + 1); ++ ++ buf[readsize] = '\0'; ++ ++ return buf; ++} ++ + static void map_entry(struct entry *entry) + { + if (entry->path) { + entry->fd = open(entry->path, O_RDONLY); + if (entry->fd < 0) { +- die(MKFS_ERROR, 1, "open failed: %s", entry->path); ++ error_msg_and_die("open failed: %s", entry->path); + } + entry->uncompressed = mmap(NULL, entry->size, PROT_READ, MAP_PRIVATE, entry->fd, 0); + if (entry->uncompressed == MAP_FAILED) { +- die(MKFS_ERROR, 1, "mmap failed: %s", entry->path); ++ error_msg_and_die("mmap failed: %s", entry->path); + } + } + } +@@ -174,8 +317,9 @@ + { + if (entry->path) { + if (munmap(entry->uncompressed, entry->size) < 0) { +- die(MKFS_ERROR, 1, "munmap failed: %s", entry->path); ++ error_msg_and_die("munmap failed: %s", entry->path); + } ++ entry->uncompressed=NULL; + close(entry->fd); + } + } +@@ -204,7 +348,8 @@ + find_identical_file(orig->next, newfile)); + } + +-static void eliminate_doubles(struct entry *root, struct entry *orig) { ++static void eliminate_doubles(struct entry *root, struct entry *orig) ++{ + if (orig) { + if (orig->size && (orig->path || orig->uncompressed)) + find_identical_file(root, orig); +@@ -232,10 +377,7 @@ + + /* Set up the path. */ + /* TODO: Reuse the parent's buffer to save memcpy'ing and duplication. */ +- path = malloc(len + 1 + MAX_INPUT_NAMELEN + 1); +- if (!path) { +- die(MKFS_ERROR, 1, "malloc failed"); +- } ++ path = xmalloc(len + 1 + MAX_INPUT_NAMELEN + 1); + memcpy(path, name, len); + endpath = path + len; + *endpath = '/'; +@@ -245,7 +387,7 @@ + dircount = scandir(name, &dirlist, 0, cramsort); + + if (dircount < 0) { +- die(MKFS_ERROR, 1, "scandir failed: %s", name); ++ error_msg_and_die("scandir failed: %s", name); + } + + /* process directory */ +@@ -269,25 +411,20 @@ + } + namelen = strlen(dirent->d_name); + if (namelen > MAX_INPUT_NAMELEN) { +- die(MKFS_ERROR, 0, +- "very long (%u bytes) filename found: %s\n" +- "please increase MAX_INPUT_NAMELEN in mkcramfs.c and recompile", ++ error_msg_and_die( ++ "Very long (%u bytes) filename `%s' found.\n" ++ " Please increase MAX_INPUT_NAMELEN in mkcramfs.c and recompile. Exiting.\n", + namelen, dirent->d_name); + } + memcpy(endpath, dirent->d_name, namelen + 1); + + if (lstat(path, &st) < 0) { ++ perror(endpath); + warn_skip = 1; + continue; + } +- entry = calloc(1, sizeof(struct entry)); +- if (!entry) { +- die(MKFS_ERROR, 1, "calloc failed"); +- } +- entry->name = strdup(dirent->d_name); +- if (!entry->name) { +- die(MKFS_ERROR, 1, "strdup failed"); +- } ++ entry = xcalloc(1, sizeof(struct entry)); ++ entry->name = xstrdup(dirent->d_name); + /* truncate multi-byte UTF-8 filenames on character boundary */ + if (namelen > CRAMFS_MAXPATHLEN) { + namelen = CRAMFS_MAXPATHLEN; +@@ -297,24 +434,25 @@ + namelen--; + /* are we reasonably certain it was UTF-8 ? */ + if (entry->name[namelen] < 0x80 || !namelen) { +- die(MKFS_ERROR, 0, "cannot truncate filenames not encoded in UTF-8"); ++ error_msg_and_die("cannot truncate filenames not encoded in UTF-8"); + } + } + entry->name[namelen] = '\0'; + } + entry->mode = st.st_mode; + entry->size = st.st_size; +- entry->uid = st.st_uid; ++ entry->uid = opt_squash ? 0 : st.st_uid; + if (entry->uid >= 1 << CRAMFS_UID_WIDTH) + warn_uid = 1; +- entry->gid = st.st_gid; +- if (entry->gid >= 1 << CRAMFS_GID_WIDTH) ++ entry->gid = opt_squash ? 0 : st.st_gid; ++ if (entry->gid >= 1 << CRAMFS_GID_WIDTH) { + /* TODO: We ought to replace with a default + gid instead of truncating; otherwise there + are security problems. Maybe mode should + be &= ~070. Same goes for uid once Linux + supports >16-bit uids. */ + warn_gid = 1; ++ } + size = sizeof(struct cramfs_inode) + ((namelen + 3) & ~3); + *fslen_ub += size; + if (S_ISDIR(st.st_mode)) { +@@ -325,21 +463,15 @@ + warn_skip = 1; + continue; + } +- entry->path = strdup(path); +- if (!entry->path) { +- die(MKFS_ERROR, 1, "strdup failed"); +- } ++ entry->path = xstrdup(path); + if ((entry->size >= 1 << CRAMFS_SIZE_WIDTH)) { + warn_size = 1; + entry->size = (1 << CRAMFS_SIZE_WIDTH) - 1; + } + } + } else if (S_ISLNK(st.st_mode)) { +- entry->uncompressed = malloc(entry->size); ++ entry->uncompressed = xreadlink(path); + if (!entry->uncompressed) { +- die(MKFS_ERROR, 1, "malloc failed"); +- } +- if (readlink(path, entry->uncompressed, entry->size) < 0) { + warn_skip = 1; + continue; + } +@@ -351,7 +483,7 @@ + if (entry->size & -(1<<CRAMFS_SIZE_WIDTH)) + warn_dev = 1; + } else { +- die(MKFS_ERROR, 0, "bogus file type: %s", entry->name); ++ error_msg_and_die("bogus file type: %s", entry->name); + } + + if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { +@@ -378,7 +510,9 @@ + struct cramfs_super *super = (struct cramfs_super *) base; + unsigned int offset = sizeof(struct cramfs_super) + image_length; + +- offset += opt_pad; /* 0 if no padding */ ++ if (opt_pad) { ++ offset += opt_pad; /* 0 if no padding */ ++ } + + super->magic = CRAMFS_MAGIC; + super->flags = CRAMFS_FLAG_FSID_VERSION_2 | CRAMFS_FLAG_SORTED_DIRS; +@@ -414,10 +548,10 @@ + struct cramfs_inode *inode = (struct cramfs_inode *) (base + entry->dir_offset); + + if ((offset & 3) != 0) { +- die(MKFS_ERROR, 0, "illegal offset of %lu bytes", offset); ++ error_msg_and_die("illegal offset of %lu bytes", offset); + } + if (offset >= (1 << (2 + CRAMFS_OFFSET_WIDTH))) { +- die(MKFS_ERROR, 0, "filesystem too big"); ++ error_msg_and_die("filesystem too big"); + } + inode->offset = (offset >> 2); + } +@@ -429,7 +563,7 @@ + */ + static void print_node(struct entry *e) + { +- char info[10]; ++ char info[12]; + char type = '?'; + + if (S_ISREG(e->mode)) type = 'f'; +@@ -442,11 +576,11 @@ + + if (S_ISCHR(e->mode) || (S_ISBLK(e->mode))) { + /* major/minor numbers can be as high as 2^12 or 4096 */ +- snprintf(info, 10, "%4d,%4d", major(e->size), minor(e->size)); ++ snprintf(info, 11, "%4d,%4d", major(e->size), minor(e->size)); + } + else { + /* size be as high as 2^24 or 16777216 */ +- snprintf(info, 10, "%9d", e->size); ++ snprintf(info, 11, "%9d", e->size); + } + + printf("%c %04o %s %5d:%-3d %s\n", +@@ -462,17 +596,9 @@ + { + int stack_entries = 0; + int stack_size = 64; +- struct entry **entry_stack; +- +- entry_stack = malloc(stack_size * sizeof(struct entry *)); +- if (!entry_stack) { +- die(MKFS_ERROR, 1, "malloc failed"); +- } +- +- if (opt_verbose) { +- printf("root:\n"); +- } ++ struct entry **entry_stack = NULL; + ++ entry_stack = xmalloc(stack_size * sizeof(struct entry *)); + for (;;) { + int dir_start = stack_entries; + while (entry) { +@@ -506,10 +632,7 @@ + if (entry->child) { + if (stack_entries >= stack_size) { + stack_size *= 2; +- entry_stack = realloc(entry_stack, stack_size * sizeof(struct entry *)); +- if (!entry_stack) { +- die(MKFS_ERROR, 1, "realloc failed"); +- } ++ entry_stack = xrealloc(entry_stack, stack_size * sizeof(struct entry *)); + } + entry_stack[stack_entries] = entry; + stack_entries++; +@@ -543,7 +666,7 @@ + + set_data_offset(entry, base, offset); + if (opt_verbose) { +- printf("%s:\n", entry->name); ++ printf("'%s':\n", entry->name); + } + entry = entry->child; + } +@@ -553,16 +676,21 @@ + + static int is_zero(char const *begin, unsigned len) + { +- /* Returns non-zero iff the first LEN bytes from BEGIN are all NULs. */ +- return (len-- == 0 || +- (begin[0] == '\0' && +- (len-- == 0 || +- (begin[1] == '\0' && +- (len-- == 0 || +- (begin[2] == '\0' && +- (len-- == 0 || +- (begin[3] == '\0' && +- memcmp(begin, begin + 4, len) == 0)))))))); ++ if (opt_holes) ++ /* Returns non-zero iff the first LEN bytes from BEGIN are ++ all NULs. */ ++ return (len-- == 0 || ++ (begin[0] == '\0' && ++ (len-- == 0 || ++ (begin[1] == '\0' && ++ (len-- == 0 || ++ (begin[2] == '\0' && ++ (len-- == 0 || ++ (begin[3] == '\0' && ++ memcmp(begin, begin + 4, len) == 0)))))))); ++ else ++ /* Never create holes. */ ++ return 0; + } + + /* +@@ -575,37 +703,34 @@ + * Note that size > 0, as a zero-sized file wouldn't ever + * have gotten here in the first place. + */ +-static unsigned int do_compress(char *base, unsigned int offset, char const *name, char *uncompressed, unsigned int size) ++static unsigned int do_compress(char *base, unsigned int offset, struct entry *entry) + { ++ unsigned int size = entry->size; + unsigned long original_size = size; + unsigned long original_offset = offset; + unsigned long new_size; + unsigned long blocks = (size - 1) / blksize + 1; + unsigned long curr = offset + 4 * blocks; + int change; ++ char *uncompressed = entry->uncompressed; + +- total_blocks += blocks; ++ total_blocks += blocks; + + do { + unsigned long len = 2 * blksize; + unsigned int input = size; +- int err; +- + if (input > blksize) + input = blksize; + size -= input; +- if (!(opt_holes && is_zero (uncompressed, input))) { +- err = compress2(base + curr, &len, uncompressed, input, Z_BEST_COMPRESSION); +- if (err != Z_OK) { +- die(MKFS_ERROR, 0, "compression error: %s", zError(err)); +- } ++ if (!is_zero (uncompressed, input)) { ++ compress(base + curr, &len, uncompressed, input); + curr += len; + } + uncompressed += input; + + if (len > blksize*2) { + /* (I don't think this can happen with zlib.) */ +- die(MKFS_ERROR, 0, "AIEEE: block \"compressed\" to > 2*blocklength (%ld)", len); ++ error_msg_and_die("AIEEE: block \"compressed\" to > 2*blocklength (%ld)\n", len); + } + + *(u32 *) (base + offset) = curr; +@@ -618,10 +743,12 @@ + st_blocks * 512. But if you say that then perhaps + administrative data should also be included in both. */ + change = new_size - original_size; +- if (opt_verbose > 1) { +- printf("%6.2f%% (%+d bytes)\t%s\n", +- (change * 100) / (double) original_size, change, name); ++#if 0 ++ if (opt_verbose) { ++ printf("%6.2f%% (%+d bytes)\t%s\n", ++ (change * 100) / (double) original_size, change, entry->name); + } ++#endif + + return curr; + } +@@ -644,7 +771,7 @@ + set_data_offset(entry, base, offset); + entry->offset = offset; + map_entry(entry); +- offset = do_compress(base, offset, entry->name, entry->uncompressed, entry->size); ++ offset = do_compress(base, offset, entry); + unmap_entry(entry); + } + } +@@ -660,13 +787,10 @@ + int fd; + char *buf; + +- fd = open(file, O_RDONLY); +- if (fd < 0) { +- die(MKFS_ERROR, 1, "open failed: %s", file); +- } ++ fd = xopen(file, O_RDONLY, 0); + buf = mmap(NULL, image_length, PROT_READ, MAP_PRIVATE, fd, 0); + if (buf == MAP_FAILED) { +- die(MKFS_ERROR, 1, "mmap failed"); ++ error_msg_and_die("mmap failed"); + } + memcpy(base + offset, buf, image_length); + munmap(buf, image_length); +@@ -679,6 +803,328 @@ + return (offset + image_length); + } + ++static struct entry *find_filesystem_entry(struct entry *dir, char *name, mode_t type) ++{ ++ struct entry *e = dir; ++ ++ if (S_ISDIR(dir->mode)) { ++ e = dir->child; ++ } ++ while (e) { ++ /* Only bother to do the expensive strcmp on matching file types */ ++ if (type == (e->mode & S_IFMT) && e->name) { ++ if (S_ISDIR(e->mode)) { ++ int len = strlen(e->name); ++ ++ /* Check if we are a parent of the correct path */ ++ if (strncmp(e->name, name, len) == 0) { ++ /* Is this an _exact_ match? */ ++ if (strcmp(name, e->name) == 0) { ++ return (e); ++ } ++ /* Looks like we found a parent of the correct path */ ++ if (name[len] == '/') { ++ if (e->child) { ++ return (find_filesystem_entry (e, name, type)); ++ } else { ++ return NULL; ++ } ++ } ++ } ++ } else { ++ if (strcmp(name, e->name) == 0) { ++ return (e); ++ } ++ } ++ } ++ e = e->next; ++ } ++ return (NULL); ++} ++ ++void modify_entry(char *full_path, unsigned long uid, unsigned long gid, ++ unsigned long mode, unsigned long rdev, struct entry *root, loff_t *fslen_ub) ++{ ++ char *name, *path, *full; ++ struct entry *curr, *parent, *entry, *prev; ++ ++ full = xstrdup(full_path); ++ path = xstrdup(dirname(full)); ++ name = full_path + strlen(path) + 1; ++ free(full); ++ if (strcmp(path, "/") == 0) { ++ parent = root; ++ name = full_path + 1; ++ } else { ++ if (!(parent = find_filesystem_entry(root, path+1, S_IFDIR))) ++ error_msg_and_die("%s/%s: could not find parent\n", path, name); ++ } ++ if ((entry = find_filesystem_entry(parent, name, (mode & S_IFMT)))) { ++ /* its there, just modify permissions */ ++ entry->mode = mode; ++ entry->uid = uid; ++ entry->gid = gid; ++ } else { /* make a new entry */ ++ ++ /* code partially replicated from parse_directory() */ ++ size_t namelen; ++ if (S_ISREG(mode)) { ++ error_msg_and_die("%s: regular file from device_table file must exist on disk!", full_path); ++ } ++ ++ namelen = strlen(name); ++ if (namelen > MAX_INPUT_NAMELEN) { ++ error_msg_and_die( ++ "Very long (%u bytes) filename `%s' found.\n" ++ " Please increase MAX_INPUT_NAMELEN in mkcramfs.c and recompile. Exiting.\n", ++ namelen, name); ++ } ++ entry = xcalloc(1, sizeof(struct entry)); ++ entry->name = xstrdup(name); ++ /* truncate multi-byte UTF-8 filenames on character boundary */ ++ if (namelen > CRAMFS_MAXPATHLEN) { ++ namelen = CRAMFS_MAXPATHLEN; ++ warn_namelen = 1; ++ /* the first lost byte must not be a trail byte */ ++ while ((entry->name[namelen] & 0xc0) == 0x80) { ++ namelen--; ++ /* are we reasonably certain it was UTF-8 ? */ ++ if (entry->name[namelen] < 0x80 || !namelen) { ++ error_msg_and_die("cannot truncate filenames not encoded in UTF-8"); ++ } ++ } ++ entry->name[namelen] = '\0'; ++ } ++ entry->mode = mode; ++ entry->uid = uid; ++ entry->gid = gid; ++ entry->size = 0; ++ if (S_ISBLK(mode) || S_ISCHR(mode)) { ++ entry->size = rdev; ++ if (entry->size & -(1<<CRAMFS_SIZE_WIDTH)) ++ warn_dev = 1; ++ } ++ ++ /* ok, now we have to backup and correct the size of all the entries above us */ ++ *fslen_ub += sizeof(struct cramfs_inode) + ((namelen + 3) & ~3); ++ parent->size += sizeof(struct cramfs_inode) + ((namelen + 3) & ~3); ++ ++ /* alright, time to link us in */ ++ curr = parent->child; ++ prev = NULL; ++ while (curr && strcmp(name, curr->name) > 0) { ++ prev = curr; ++ curr = curr->next; ++ } ++ if (!prev) parent->child = entry; ++ else prev->next = entry; ++ entry->next = curr; ++ entry->child = NULL; ++ } ++ if (entry->uid >= 1 << CRAMFS_UID_WIDTH) ++ warn_uid = 1; ++ if (entry->gid >= 1 << CRAMFS_GID_WIDTH) { ++ /* TODO: We ought to replace with a default ++ gid instead of truncating; otherwise there ++ are security problems. Maybe mode should ++ be &= ~070. Same goes for uid once Linux ++ supports >16-bit uids. */ ++ warn_gid = 1; ++ } ++ free(path); ++} ++ ++/* the GNU C library has a wonderful scanf("%as", string) which will ++ allocate the string with the right size, good to avoid buffer overruns. ++ the following macros use it if available or use a hacky workaround... ++ */ ++ ++#ifdef __GNUC__ ++#define SCANF_PREFIX "a" ++#define SCANF_STRING(s) (&s) ++#define GETCWD_SIZE 0 ++#else ++#define SCANF_PREFIX "511" ++#define SCANF_STRING(s) (s = xmalloc(512)) ++#define GETCWD_SIZE -1 ++inline int snprintf(char *str, size_t n, const char *fmt, ...) ++{ ++ int ret; ++ va_list ap; ++ ++ va_start(ap, fmt); ++ ret = vsprintf(str, fmt, ap); ++ va_end(ap); ++ return ret; ++} ++#endif ++ ++/* device table entries take the form of: ++ <path> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count> ++ /dev/mem c 640 0 0 1 1 0 0 - ++ ++ type can be one of: ++ f A regular file ++ d Directory ++ c Character special device file ++ b Block special device file ++ p Fifo (named pipe) ++ ++ I don't bother with symlinks (permissions are irrelevant), hard ++ links (special cases of regular files), or sockets (why bother). ++ ++ Regular files must exist in the target root directory. If a char, ++ block, fifo, or directory does not exist, it will be created. ++*/ ++ ++static int interpret_table_entry(char *line, struct entry *root, loff_t *fslen_ub) ++{ ++ char type, *name = NULL; ++ unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0; ++ unsigned long start = 0, increment = 1, count = 0; ++ ++ if (sscanf (line, "%" SCANF_PREFIX "s %c %lo %lu %lu %lu %lu %lu %lu %lu", ++ SCANF_STRING(name), &type, &mode, &uid, &gid, &major, &minor, ++ &start, &increment, &count) < 0) ++ { ++ return 1; ++ } ++ ++ if (!strcmp(name, "/")) { ++ error_msg_and_die("Device table entries require absolute paths"); ++ } ++ ++ switch (type) { ++ case 'd': ++ mode |= S_IFDIR; ++ modify_entry(name, uid, gid, mode, 0, root, fslen_ub); ++ break; ++ case 'f': ++ mode |= S_IFREG; ++ modify_entry(name, uid, gid, mode, 0, root, fslen_ub); ++ break; ++ case 'p': ++ mode |= S_IFIFO; ++ modify_entry(name, uid, gid, mode, 0, root, fslen_ub); ++ break; ++ case 'c': ++ case 'b': ++ mode |= (type == 'c') ? S_IFCHR : S_IFBLK; ++ if (count > 0) { ++ char *buf; ++ unsigned long i; ++ dev_t rdev; ++ ++ for (i = start; i < count; i++) { ++ asprintf(&buf, "%s%lu", name, i); ++ rdev = makedev(major, minor + (i * increment - start)); ++ modify_entry(buf, uid, gid, mode, rdev, root, fslen_ub); ++ free(buf); ++ } ++ } else { ++ dev_t rdev = makedev(major, minor); ++ modify_entry(name, uid, gid, mode, rdev, root, fslen_ub); ++ } ++ break; ++ default: ++ error_msg_and_die("Unsupported file type"); ++ } ++ free(name); ++ return 0; ++} ++ ++static int parse_device_table(FILE *file, struct entry *root, loff_t *fslen_ub) ++{ ++ char *line; ++ int status = 0; ++ size_t length = 0; ++ ++ /* Turn off squash, since we must ensure that values ++ * entered via the device table are not squashed */ ++ opt_squash = 0; ++ ++ /* Looks ok so far. The general plan now is to read in one ++ * line at a time, check for leading comment delimiters ('#'), ++ * then try and parse the line as a device table. If we fail ++ * to parse things, try and help the poor fool to fix their ++ * device table with a useful error msg... */ ++ line = NULL; ++ while (getline(&line, &length, file) != -1) { ++ /* First trim off any whitespace */ ++ int len = strlen(line); ++ ++ /* trim trailing whitespace */ ++ while (len > 0 && isspace(line[len - 1])) ++ line[--len] = '\0'; ++ /* trim leading whitespace */ ++ memmove(line, &line[strspn(line, " \n\r\t\v")], len); ++ ++ /* How long are we after trimming? */ ++ len = strlen(line); ++ ++ /* If this is NOT a comment line, try to interpret it */ ++ if (len && *line != '#') { ++ if (interpret_table_entry(line, root, fslen_ub)) ++ status = 1; ++ } ++ ++ free(line); ++ line = NULL; ++ } ++ free(line); ++ fclose(file); ++ ++ return status; ++} ++ ++void traverse(struct entry *entry, int depth) ++{ ++ struct entry *curr = entry; ++ int i; ++ ++ while (curr) { ++ for (i = 0; i < depth; i++) putchar(' '); ++ printf("%s: size=%d mode=%d same=%p\n", ++ (curr->name)? (char*)curr->name : "/", ++ curr->size, curr->mode, curr->same); ++ if (curr->child) traverse(curr->child, depth + 4); ++ curr = curr->next; ++ } ++} ++ ++static void free_filesystem_entry(struct entry *dir) ++{ ++ struct entry *e = dir, *last; ++ ++ if (S_ISDIR(dir->mode)) { ++ e = dir->child; ++ } ++ while (e) { ++ if (e->name) ++ free(e->name); ++ if (e->path) ++ free(e->path); ++ if (e->uncompressed) ++ free(e->uncompressed); ++ last = e; ++ if (e->child) { ++ free_filesystem_entry(e); ++ } ++ e = e->next; ++ free(last); ++ } ++} ++ ++ ++/* ++ * Usage: ++ * ++ * mkcramfs directory-name outfile ++ * ++ * where "directory-name" is simply the root of the directory ++ * tree that we want to generate a compressed filesystem out ++ * of. ++ */ + int main(int argc, char **argv) + { + struct stat st; /* used twice... */ +@@ -692,6 +1138,7 @@ + u32 crc; + int c; /* for getopt */ + char *ep; /* for strtoul */ ++ FILE *devtable = NULL; + + total_blocks = 0; + +@@ -699,7 +1146,7 @@ + progname = argv[0]; + + /* command line options */ +- while ((c = getopt(argc, argv, "hEe:i:n:psvz")) != EOF) { ++ while ((c = getopt(argc, argv, "hEe:i:n:psvzD:q")) != EOF) { + switch (c) { + case 'h': + usage(MKFS_OK); +@@ -715,7 +1162,7 @@ + case 'i': + opt_image = optarg; + if (lstat(opt_image, &st) < 0) { +- die(MKFS_ERROR, 1, "lstat failed: %s", opt_image); ++ error_msg_and_die("lstat failed: %s", opt_image); + } + image_length = st.st_size; /* may be padded later */ + fslen_ub += (image_length + 3); /* 3 is for padding */ +@@ -736,6 +1183,16 @@ + case 'z': + opt_holes = 1; + break; ++ case 'q': ++ opt_squash = 1; ++ break; ++ case 'D': ++ devtable = xfopen(optarg, "r"); ++ if (fstat(fileno(devtable), &st) < 0) ++ perror_msg_and_die(optarg); ++ if (st.st_size < 10) ++ error_msg_and_die("%s: not a proper device table file\n", optarg); ++ break; + } + } + +@@ -745,25 +1202,23 @@ + outfile = argv[optind + 1]; + + if (stat(dirname, &st) < 0) { +- die(MKFS_USAGE, 1, "stat failed: %s", dirname); +- } +- fd = open(outfile, O_WRONLY | O_CREAT | O_TRUNC, 0666); +- if (fd < 0) { +- die(MKFS_USAGE, 1, "open failed: %s", outfile); ++ error_msg_and_die("stat failed: %s", dirname); + } ++ fd = xopen(outfile, O_WRONLY | O_CREAT | O_TRUNC, 0666); + +- root_entry = calloc(1, sizeof(struct entry)); +- if (!root_entry) { +- die(MKFS_ERROR, 1, "calloc failed"); +- } ++ root_entry = xcalloc(1, sizeof(struct entry)); + root_entry->mode = st.st_mode; + root_entry->uid = st.st_uid; + root_entry->gid = st.st_gid; + + root_entry->size = parse_directory(root_entry, dirname, &root_entry->child, &fslen_ub); + ++ if (devtable) { ++ parse_device_table(devtable, root_entry, &fslen_ub); ++ } ++ + /* always allocate a multiple of blksize bytes because that's +- what we're going to write later on */ ++ what we're going to write later on */ + fslen_ub = ((fslen_ub - 1) | (blksize - 1)) + 1; + + if (fslen_ub > MAXFSLEN) { +@@ -790,7 +1245,7 @@ + rom_image = mmap(NULL, fslen_ub?fslen_ub:1, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (rom_image == MAP_FAILED) { +- die(MKFS_ERROR, 1, "mmap failed"); ++ error_msg_and_die("mmap failed"); + } + + /* Skip the first opt_pad bytes for boot loader code */ +@@ -807,6 +1262,7 @@ + } + + offset = write_directory_structure(root_entry->child, rom_image, offset); ++ if (opt_verbose) + printf("Directory data: %d bytes\n", offset); + + offset = write_data(root_entry, rom_image, offset); +@@ -814,30 +1270,38 @@ + /* We always write a multiple of blksize bytes, so that + losetup works. */ + offset = ((offset - 1) | (blksize - 1)) + 1; ++ if (opt_verbose) + printf("Everything: %d kilobytes\n", offset >> 10); + + /* Write the superblock now that we can fill in all of the fields. */ + write_superblock(root_entry, rom_image+opt_pad, offset); ++ if (opt_verbose) + printf("Super block: %d bytes\n", sizeof(struct cramfs_super)); + + /* Put the checksum in. */ + crc = crc32(0L, Z_NULL, 0); + crc = crc32(crc, (rom_image+opt_pad), (offset-opt_pad)); + ((struct cramfs_super *) (rom_image+opt_pad))->fsid.crc = crc; ++ if (opt_verbose) + printf("CRC: %x\n", crc); + + /* Check to make sure we allocated enough space. */ + if (fslen_ub < offset) { +- die(MKFS_ERROR, 0, "not enough space allocated for ROM image (%Ld allocated, %d used)", fslen_ub, offset); ++ error_msg_and_die("not enough space allocated for ROM " ++ "image (%Ld allocated, %d used)", fslen_ub, offset); + } + + written = write(fd, rom_image, offset); + if (written < 0) { +- die(MKFS_ERROR, 1, "write failed"); ++ error_msg_and_die("write failed"); + } + if (offset != written) { +- die(MKFS_ERROR, 0, "ROM image write failed (wrote %d of %d bytes)", written, offset); ++ error_msg_and_die("ROM image write failed (wrote %d of %d bytes)", written, offset); + } ++ ++ /* Free up memory */ ++ free_filesystem_entry(root_entry); ++ free(root_entry); + + /* (These warnings used to come at the start, but they scroll off the + screen too quickly.) */ |