diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/recipes-devtools/makedevs/makedevs/makedevs.c')
-rw-r--r-- | import-layers/yocto-poky/meta/recipes-devtools/makedevs/makedevs/makedevs.c | 589 |
1 files changed, 0 insertions, 589 deletions
diff --git a/import-layers/yocto-poky/meta/recipes-devtools/makedevs/makedevs/makedevs.c b/import-layers/yocto-poky/meta/recipes-devtools/makedevs/makedevs/makedevs.c deleted file mode 100644 index cba768141..000000000 --- a/import-layers/yocto-poky/meta/recipes-devtools/makedevs/makedevs/makedevs.c +++ /dev/null @@ -1,589 +0,0 @@ -#define _GNU_SOURCE -#include <stdio.h> -#include <errno.h> -#include <string.h> -#include <stdarg.h> -#include <stdlib.h> -#include <ctype.h> -#include <fcntl.h> -#include <dirent.h> -#include <unistd.h> -#include <time.h> -#include <getopt.h> -#include <libgen.h> -#include <sys/types.h> -#include <sys/stat.h> - -#define MINORBITS 8 -#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi)) -#define MAX_ID_LEN 40 -#define MAX_NAME_LEN 40 -#ifndef PATH_MAX -#define PATH_MAX 4096 -#endif -#define VERSION "1.0.1" - -/* These are all stolen from busybox's libbb to make - * error handling simpler (and since I maintain busybox, - * I'm rather partial to these for error handling). - * -Erik - */ -static const char *const app_name = "makedevs"; -static const char *const memory_exhausted = "memory exhausted"; -static char default_rootdir[]="."; -static char *rootdir = default_rootdir; -static int trace = 0; - -struct name_id { - char name[MAX_NAME_LEN+1]; - unsigned long id; - struct name_id *next; -}; - -static struct name_id *usr_list = NULL; -static struct name_id *grp_list = NULL; - -static void verror_msg(const char *s, va_list p) -{ - fflush(stdout); - fprintf(stderr, "%s: ", app_name); - vfprintf(stderr, s, 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(EXIT_FAILURE); -} - -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_and_die(const char *s, ...) -{ - va_list p; - - va_start(p, s); - vperror_msg(s, p); - va_end(p); - exit(EXIT_FAILURE); -} - -static FILE *xfopen(const char *path, const char *mode) -{ - FILE *fp; - - if ((fp = fopen(path, mode)) == NULL) - perror_msg_and_die("%s", path); - return fp; -} - -static 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; -} - -static struct name_id* alloc_node(void) -{ - struct name_id *node; - node = (struct name_id*)malloc(sizeof(struct name_id)); - if (node == NULL) { - error_msg_and_die(memory_exhausted); - } - memset((void *)node->name, 0, MAX_NAME_LEN+1); - node->id = 0xffffffff; - node->next = NULL; - return node; -} - -static struct name_id* parse_line(char *line) -{ - char *p; - int i; - char id_buf[MAX_ID_LEN+1]; - struct name_id *node; - node = alloc_node(); - p = line; - i = 0; - // Get name field - while (*p != ':') { - if (i > MAX_NAME_LEN) - error_msg_and_die("Name field too long"); - node->name[i++] = *p++; - } - node->name[i] = '\0'; - p++; - // Skip the second field - while (*p != ':') - p++; - p++; - // Get id field - i = 0; - while (*p != ':') { - if (i > MAX_ID_LEN) - error_msg_and_die("ID filed too long"); - id_buf[i++] = *p++; - } - id_buf[i] = '\0'; - node->id = atol(id_buf); - return node; -} - -static void get_list_from_file(FILE *file, struct name_id **plist) -{ - char *line; - int len = 0; - size_t length = 256; - struct name_id *node, *cur; - - if((line = (char *)malloc(length)) == NULL) { - error_msg_and_die(memory_exhausted); - } - - while ((len = getline(&line, &length, file)) != -1) { - node = parse_line(line); - if (*plist == NULL) { - *plist = node; - cur = *plist; - } else { - cur->next = node; - cur = cur->next; - } - } - - if (line) - free(line); -} - -static unsigned long convert2guid(char *id_buf, struct name_id *search_list) -{ - char *p; - int isnum; - struct name_id *node; - p = id_buf; - isnum = 1; - while (*p != '\0') { - if (!isdigit(*p)) { - isnum = 0; - break; - } - p++; - } - if (isnum) { - // Check for bad user/group name - node = search_list; - while (node != NULL) { - if (!strncmp(node->name, id_buf, strlen(id_buf))) { - fprintf(stderr, "WARNING: Bad user/group name %s detected\n", id_buf); - break; - } - node = node->next; - } - return (unsigned long)atol(id_buf); - } else { - node = search_list; - while (node != NULL) { - if (!strncmp(node->name, id_buf, strlen(id_buf))) - return node->id; - node = node->next; - } - error_msg_and_die("No entry for %s in search list", id_buf); - } -} - -static void free_list(struct name_id *list) -{ - struct name_id *cur; - cur = list; - while (cur != NULL) { - list = cur; - cur = cur->next; - free(list); - } -} - -static void add_new_directory(char *name, char *path, - unsigned long uid, unsigned long gid, unsigned long mode) -{ - if (trace) - fprintf(stderr, "Directory: %s %s UID: %ld GID %ld MODE: %04lo", path, name, uid, gid, mode); - - if (mkdir(path, mode) < 0) { - if (EEXIST == errno) { - /* Unconditionally apply the mode setting to the existing directory. - * XXX should output something when trace */ - chmod(path, mode & ~S_IFMT); - } - } - if (trace) - putc('\n', stderr); - chown(path, uid, gid); -} - -static void add_new_device(char *name, char *path, unsigned long uid, - unsigned long gid, unsigned long mode, dev_t rdev) -{ - int status; - struct stat sb; - - if (trace) { - fprintf(stderr, "Device: %s %s UID: %ld GID: %ld MODE: %04lo MAJOR: %d MINOR: %d", - path, name, uid, gid, mode, (short)(rdev >> 8), (short)(rdev & 0xff)); - } - - memset(&sb, 0, sizeof(struct stat)); - status = lstat(path, &sb); - if (status >= 0) { - /* It is ok for some types of files to not exit on disk (such as - * device nodes), but if they _do_ exist, the file type bits had - * better match those of the actual file or strange things will happen... */ - if ((mode & S_IFMT) != (sb.st_mode & S_IFMT)) { - if (trace) - putc('\n', stderr); - error_msg_and_die("%s: existing file (04%o) type does not match specified file type (04%lo)!", - path, (sb.st_mode & S_IFMT), (mode & S_IFMT)); - } - if (mode != sb.st_mode) { - if (trace) - fprintf(stderr, " -- applying new mode 04%lo (old was 04%o)\n", mode & ~S_IFMT, sb.st_mode & ~S_IFMT); - /* Apply the mode setting to the existing device node */ - chmod(path, mode & ~S_IFMT); - } - else { - if (trace) - fprintf(stderr, " -- extraneous entry in table\n", path); - } - } - else { - mknod(path, mode, rdev); - if (trace) - putc('\n', stderr); - - } - - chown(path, uid, gid); -} - -static void add_new_file(char *name, char *path, unsigned long uid, - unsigned long gid, unsigned long mode) -{ - if (trace) { - fprintf(stderr, "File: %s %s UID: %ld GID: %ld MODE: %04lo\n", - path, name, gid, uid, mode); - } - - int fd = open(path,O_CREAT | O_WRONLY, mode); - if (fd < 0) { - error_msg_and_die("%s: file can not be created!", path); - } else { - close(fd); - } - chmod(path, mode); - chown(path, uid, gid); -} - - -static void add_new_fifo(char *name, char *path, unsigned long uid, - unsigned long gid, unsigned long mode) -{ - if (trace) { - printf("Fifo: %s %s UID: %ld GID: %ld MODE: %04lo\n", - path, name, gid, uid, mode); - } - - int status; - struct stat sb; - - memset(&sb, 0, sizeof(struct stat)); - status = stat(path, &sb); - - - /* Update the mode if we exist and are a fifo already */ - if (status >= 0 && S_ISFIFO(sb.st_mode)) { - chmod(path, mode); - } else { - if (mknod(path, mode, 0)) - error_msg_and_die("%s: file can not be created with mknod!", path); - } - chown(path, uid, gid); -} - - -/* device table entries take the form of: - <path> <type> <mode> <usr> <grp> <major> <minor> <start> <inc> <count> - /dev/mem c 640 0 0 1 1 0 0 - - /dev/zero c 644 root root 1 5 - - - - - 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) -{ - char *name; - char usr_buf[MAX_ID_LEN]; - char grp_buf[MAX_ID_LEN]; - char path[4096], type; - unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0; - unsigned long start = 0, increment = 1, count = 0; - - if (0 > sscanf(line, "%4095s %c %lo %40s %40s %lu %lu %lu %lu %lu", path, - &type, &mode, usr_buf, grp_buf, &major, &minor, &start, - &increment, &count)) - { - fprintf(stderr, "%s: sscanf returned < 0 for line '%s'\n", app_name, line); - return 1; - } - - uid = convert2guid(usr_buf, usr_list); - gid = convert2guid(grp_buf, grp_list); - - if (strncmp(path, "/", 1)) { - error_msg_and_die("Device table entries require absolute paths"); - } - name = xstrdup(path + 1); - /* prefix path with rootdir */ - sprintf(path, "%s/%s", rootdir, name); - - /* XXX Why is name passed into all of the add_new_*() routines? */ - switch (type) { - case 'd': - mode |= S_IFDIR; - add_new_directory(name, path, uid, gid, mode); - break; - case 'f': - mode |= S_IFREG; - add_new_file(name, path, uid, gid, mode); - break; - case 'p': - mode |= S_IFIFO; - add_new_fifo(name, path, uid, gid, mode); - break; - case 'c': - case 'b': - mode |= (type == 'c') ? S_IFCHR : S_IFBLK; - if (count > 0) { - int i; - dev_t rdev; - char buf[80]; - - for (i = start; i < start + count; i++) { - sprintf(buf, "%s%d", name, i); - sprintf(path, "%s/%s%d", rootdir, name, i); - /* FIXME: MKDEV uses illicit insider knowledge of kernel - * major/minor representation... */ - rdev = MKDEV(major, minor + (i - start) * increment); - sprintf(path, "%s/%s\0", rootdir, buf); - add_new_device(buf, path, uid, gid, mode, rdev); - } - } else { - /* FIXME: MKDEV uses illicit insider knowledge of kernel - * major/minor representation... */ - dev_t rdev = MKDEV(major, minor); - add_new_device(name, path, uid, gid, mode, rdev); - } - break; - default: - error_msg_and_die("Unsupported file type"); - } - if (name) free(name); - return 0; -} - - -static void parse_device_table(FILE * file) -{ - char *line; - size_t length = 256; - int len = 0; - - if((line = (char *)malloc(length)) == NULL) { - error_msg_and_die(memory_exhausted); - } - /* Looks ok so far. The general plan now is to read in one - * line at a time, trim off leading and trailing whitespace, - * check for leading comment delimiters ('#') or a blank line, - * then try and parse the line as a device table entry. If we fail - * to parse things, try and help the poor fool to fix their - * device table with a useful error msg... */ - - while ((len = getline(&line, &length, file)) != -1) { - /* First trim off any whitespace */ - - /* 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 + 1); - - /* If this is NOT a comment or an empty line, try to interpret it */ - if (*line != '#' && *line != '\0') interpret_table_entry(line); - } - - if (line) - free(line); -} - -static int parse_devtable(FILE * devtable) -{ - struct stat sb; - - if (lstat(rootdir, &sb)) { - perror_msg_and_die("%s", rootdir); - } - if (chdir(rootdir)) - perror_msg_and_die("%s", rootdir); - - if (devtable) - parse_device_table(devtable); - - return 0; -} - - -static struct option long_options[] = { - {"root", 1, NULL, 'r'}, - {"help", 0, NULL, 'h'}, - {"trace", 0, NULL, 't'}, - {"version", 0, NULL, 'v'}, - {"devtable", 1, NULL, 'D'}, - {NULL, 0, NULL, 0} -}; - -static char *helptext = - "Usage: makedevs [OPTIONS]\n" - "Build entries based upon device_table.txt\n\n" - "Options:\n" - " -r, -d, --root=DIR Build filesystem from directory DIR (default: cwd)\n" - " -D, --devtable=FILE Use the named FILE as a device table file\n" - " -h, --help Display this help text\n" - " -t, --trace Be verbose\n" - " -v, --version Display version information\n\n"; - - -int main(int argc, char **argv) -{ - int c, opt; - extern char *optarg; - struct stat statbuf; - char passwd_path[PATH_MAX]; - char group_path[PATH_MAX]; - FILE *passwd_file = NULL; - FILE *group_file = NULL; - FILE *devtable = NULL; - DIR *dir = NULL; - - umask (0); - - if (argc==1) { - fputs( helptext , stderr ); - exit(1); - } - - while ((opt = getopt_long(argc, argv, "D:d:r:htv", - long_options, &c)) >= 0) { - switch (opt) { - case 'D': - devtable = xfopen(optarg, "r"); - if (fstat(fileno(devtable), &statbuf) < 0) - perror_msg_and_die(optarg); - if (statbuf.st_size < 10) - error_msg_and_die("%s: not a proper device table file", optarg); - break; - case 'h': - puts(helptext); - exit(0); - case 'r': - case 'd': /* for compatibility with mkfs.jffs, genext2fs, etc... */ - if (rootdir != default_rootdir) { - error_msg_and_die("root directory specified more than once"); - } - if ((dir = opendir(optarg)) == NULL) { - perror_msg_and_die(optarg); - } else { - closedir(dir); - } - /* If "/" is specified, use "" because rootdir is always prepended to a - * string that starts with "/" */ - if (0 == strcmp(optarg, "/")) - rootdir = xstrdup(""); - else - rootdir = xstrdup(optarg); - break; - - case 't': - trace = 1; - break; - - case 'v': - printf("%s: %s\n", app_name, VERSION); - exit(0); - default: - fputs(helptext,stderr); - exit(1); - } - } - - if (argv[optind] != NULL) { - fputs(helptext,stderr); - exit(1); - } - - // Get name-id mapping - sprintf(passwd_path, "%s/etc/passwd", rootdir); - sprintf(group_path, "%s/etc/group", rootdir); - if ((passwd_file = fopen(passwd_path, "r")) != NULL) { - get_list_from_file(passwd_file, &usr_list); - fclose(passwd_file); - } - if ((group_file = fopen(group_path, "r")) != NULL) { - get_list_from_file(group_file, &grp_list); - fclose(group_file); - } - - // Parse devtable - if(devtable) { - parse_devtable(devtable); - fclose(devtable); - } - - // Free list - free_list(usr_list); - free_list(grp_list); - - return 0; -} |