From 709c4d66e0b107ca606941b988bad717c0b45d9b Mon Sep 17 00:00:00 2001 From: Denys Dmytriyenko Date: Tue, 17 Mar 2009 14:32:59 -0400 Subject: rename packages/ to recipes/ per earlier agreement See links below for more details: http://thread.gmane.org/gmane.comp.handhelds.openembedded/21326 http://thread.gmane.org/gmane.comp.handhelds.openembedded/21816 Signed-off-by: Denys Dmytriyenko Acked-by: Mike Westerhof Acked-by: Philip Balister Acked-by: Khem Raj Acked-by: Marcin Juszkiewicz Acked-by: Koen Kooi Acked-by: Frans Meulenbroeks --- recipes/makedevs/makedevs-1.0.0/makedevs.c | 360 +++++++++++++++++++++++++++++ 1 file changed, 360 insertions(+) create mode 100644 recipes/makedevs/makedevs-1.0.0/makedevs.c (limited to 'recipes/makedevs/makedevs-1.0.0/makedevs.c') diff --git a/recipes/makedevs/makedevs-1.0.0/makedevs.c b/recipes/makedevs/makedevs-1.0.0/makedevs.c new file mode 100644 index 0000000000..c7ad722f2e --- /dev/null +++ b/recipes/makedevs/makedevs-1.0.0/makedevs.c @@ -0,0 +1,360 @@ +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MINORBITS 8 +#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi)) + +/* 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 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)); +} + +#if 0 +static void perror_msg(const char *s, ...) +{ + va_list p; + + va_start(p, s); + vperror_msg(s, p); + va_end(p); +} +#endif + +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 void add_new_directory(char *name, char *path, + unsigned long uid, unsigned long gid, unsigned long mode) +{ + mkdir(path, mode); + chown(path, uid, gid); +// printf("Directory: %s %s UID: %ld GID %ld MODE: %ld\n", path, name, uid, gid, mode); +} + +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; + time_t timestamp = time(NULL); + + 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 specified mode had + * better match the actual file or strange things will happen.... */ + if ((mode & S_IFMT) != (sb.st_mode & S_IFMT)) + error_msg_and_die("%s: file type does not match specified type!", path); + timestamp = sb.st_mtime; + } + + mknod(name, mode, rdev); + chown(path, uid, gid); +// printf("Device: %s %s UID: %ld GID: %ld MODE: %ld MAJOR: %d MINOR: %d\n", +// path, name, uid, gid, mode, (short)(rdev >> 8), (short)(rdev & 0xff)); +} + +static void add_new_file(char *name, char *path, unsigned long uid, + unsigned long gid, unsigned long 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); +// printf("File: %s %s UID: %ld GID: %ld MODE: %ld\n", +// path, name, gid, uid, mode); +} + + +static void add_new_fifo(char *name, char *path, unsigned long uid, + unsigned long gid, unsigned long mode) +{ + if (mknod(path, mode, 0)) + error_msg_and_die("%s: file can not be created with mknod!", path); + chown(path, uid, gid); +// printf("File: %s %s UID: %ld GID: %ld MODE: %ld\n", +// path, name, gid, uid, mode); +} + + +/* device table entries take the form of: + + /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) +{ + char *name; + 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, "%40s %c %lo %lu %lu %lu %lu %lu %lu %lu", path, + &type, &mode, &uid, &gid, &major, &minor, &start, + &increment, &count)) + { + return 1; + } + + if (!strcmp(path, "/")) { + error_msg_and_die("Device table entries require absolute paths"); + } + name = xstrdup(path + 1); + sprintf(path, "%s/%s\0", rootdir, name); + + 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 < count; i++) { + sprintf(buf, "%s%d", name, i); + /* FIXME: MKDEV uses illicit insider knowledge of kernel + * major/minor representation... */ + rdev = MKDEV(major, minor + (i * increment - start)); + 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; + + /* 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... */ + + if((line = (char *)malloc(length)) == NULL) { + fclose(file); + return; + } + + 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 line, try to interpret it */ + if (*line != '#') interpret_table_entry(line); + } + if (line) free(line); + + fclose(file); +} + +static int go(char *dname, FILE * devtable) +{ + struct stat sb; + + if (lstat(dname, &sb)) { + perror_msg_and_die("%s", dname); + } + if (chdir(dname)) + perror_msg_and_die("%s", dname); + + if (devtable) + parse_device_table(devtable); + + return 0; +} + + +static struct option long_options[] = { + {"root", 1, NULL, 'r'}, + {"help", 0, NULL, 'h'}, + {"squash", 0, NULL, 'q'}, + {"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" + " -q, --squash Squash permissions and owners making all files be owned by root\n" + " -h, --help Display this help text\n" + " -v, --version Display version information\n\n"; + + +static char *revtext = "$Revision: 0.1 $"; + +int main(int argc, char **argv) +{ + int c, opt; + extern char *optarg; + struct stat statbuf; + FILE *devtable = NULL; + + umask (0); + + while ((opt = getopt_long(argc, argv, "D:d:r:qhv", + 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': + fprintf(stderr, helptext); + exit(1); + 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"); + } + rootdir = xstrdup(optarg); + break; + + case 'v': + fprintf(stderr, "makedevs revision %.*s\n", + (int) strlen(revtext) - 13, revtext + 11); + exit(1); + } + } + + go(rootdir, devtable); + return 0; +} -- cgit v1.2.3