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author | Anthony Newnam <anthony.newnam@garmin.com> | 2010-07-06 18:18:10 -0500 |
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committer | Anthony Newnam <anthony.newnam@garmin.com> | 2010-07-14 13:30:11 -0500 |
commit | 365a09e817e919c491a1e8abce0b734af14d3e5f (patch) | |
tree | 497006245423c35e16ff8ec0ac334cf5f27ced70 /toolbox | |
parent | 230cb33fd1ab335c6f808c72db891993b00110a0 (diff) | |
download | system_core-365a09e817e919c491a1e8abce0b734af14d3e5f.zip system_core-365a09e817e919c491a1e8abce0b734af14d3e5f.tar.gz system_core-365a09e817e919c491a1e8abce0b734af14d3e5f.tar.bz2 |
Add -R to chmod
Change-Id: I30f976598bd937f656a3ad3395349f09e695cfce
Diffstat (limited to 'toolbox')
-rw-r--r-- | toolbox/chmod.c | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/toolbox/chmod.c b/toolbox/chmod.c index 31a53bf..2a524e9 100644 --- a/toolbox/chmod.c +++ b/toolbox/chmod.c @@ -4,17 +4,74 @@ #include <sys/types.h> #include <dirent.h> #include <errno.h> +#include <sys/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 chmod_main(int argc, char **argv) { int i; - if (argc < 3) { - fprintf(stderr, "Usage: chmod <MODE> <FILE>\n"); - return 10; + 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; @@ -29,11 +86,15 @@ int chmod_main(int argc, char **argv) } 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; } |