diff options
Diffstat (limited to 'package/toolbox/src/src/chmod.c')
-rw-r--r-- | package/toolbox/src/src/chmod.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/package/toolbox/src/src/chmod.c b/package/toolbox/src/src/chmod.c new file mode 100644 index 000000000..1de14aa2c --- /dev/null +++ b/package/toolbox/src/src/chmod.c @@ -0,0 +1,101 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <dirent.h> +#include <errno.h> +#include <limits.h> +#include <sys/stat.h> + +#include <unistd.h> +#include <time.h> + +void recurse_chmod(char* path, int mode) +{ + struct dirent *dp; + DIR *dir = opendir(path); + if (dir == NULL) { + // not a directory, carry on + return; + } + char *subpath = malloc(sizeof(char)*PATH_MAX); + int pathlen = strlen(path); + + while ((dp = readdir(dir)) != NULL) { + if (strcmp(dp->d_name, ".") == 0 || + strcmp(dp->d_name, "..") == 0) continue; + + if (strlen(dp->d_name) + pathlen + 2/*NUL and slash*/ > PATH_MAX) { + fprintf(stderr, "Invalid path specified: too long\n"); + exit(1); + } + + strcpy(subpath, path); + strcat(subpath, "/"); + strcat(subpath, dp->d_name); + + if (chmod(subpath, mode) < 0) { + fprintf(stderr, "Unable to chmod %s: %s\n", subpath, strerror(errno)); + exit(1); + } + + recurse_chmod(subpath, mode); + } + free(subpath); + closedir(dir); +} + +static int usage() +{ + fprintf(stderr, "Usage: chmod [OPTION] <MODE> <FILE>\n"); + fprintf(stderr, " -R, --recursive change files and directories recursively\n"); + fprintf(stderr, " --help display this help and exit\n"); + + return 10; +} + +int main(int argc, char **argv) +{ + int i; + + if (argc < 3 || strcmp(argv[1], "--help") == 0) { + return usage(); + } + + int recursive = (strcmp(argv[1], "-R") == 0 || + strcmp(argv[1], "--recursive") == 0) ? 1 : 0; + + if (recursive && argc < 4) { + return usage(); + } + + if (recursive) { + argc--; + argv++; + } + + int mode = 0; + const char* s = argv[1]; + while (*s) { + if (*s >= '0' && *s <= '7') { + mode = (mode<<3) | (*s-'0'); + } + else { + fprintf(stderr, "Bad mode\n"); + return 10; + } + s++; + } + + for (i = 2; i < argc; i++) { + if (chmod(argv[i], mode) < 0) { + fprintf(stderr, "Unable to chmod %s: %s\n", argv[i], strerror(errno)); + return 10; + } + if (recursive) { + recurse_chmod(argv[i], mode); + } + } + return 0; +} + |