// changes a given file attributes
void chattr_cmd(int term, char **args, int argc)
{
int flags = 0, substract = 0;
char *path = NULL;
// changeable attributes are: hidden and readonly
// -|+{h,r}
if(argc != 2 || len(args[1]) == 1 || (args[1][0] != '+' && args[1][0] != '-'))
{
term_color_print(term, invalid_params, 12);
term_color_print(term, "Usage: chattr filename +|-{h,r}.\n", 7);
return;
}
path = build_path(args[0], term);
if(path == NULL)
{
term_color_print(term, "Invalid path.\n", 7);
return;
}
if(args[1][0] == '-')
{
substract = 1;
}
if(first_index_of(args[1], 'h', 0) != -1)
{
flags |= IOLIB_ATT_HIDDEN;
}
if(first_index_of(args[1], 'r', 0) != -1)
{
flags |= IOLIB_ATT_READONLY;
}
if(chattr(path, flags, substract))
{
term_color_print(term, mapioerr(ioerror()), 12);
term_color_print(term, "\n", 11);
}
free(path);
}
/* implement chattr */
int
main(int argc, char *argv[]) {
int opt;
int fd;
int attr;
char *file, *mode, *p;
Boolean info = TRUE; /* error messages */
int action;
if (argc < 2 || strcmp(argv[1], "--help") == 0) {
eprintf("Usage: %s [-f] mode file", argv[0]);
fprintf(stderr, "\t mode: +-=[aAcCdDeijsStTu]");
exit(EXIT_FAILURE);
}
while ((opt = getopt(argc, argv, "f")) != -1) {
switch (opt) {
case 'f':
info = FALSE;
break;
default: /* '?' */
usageErr("%s [-a] file\n", argv[0]);
}
}
if (optind+2 > argc) {
eprintf("Error: optind: %d argc: %d\n", optind, argc);
exit(EXIT_FAILURE);
}
mode = argv[optind];
file = argv[optind+1];
/* Build bit mask based on attribute string in argv[1] */
switch (*mode) {
case '+': action = SET; break;
case '-': action = UNSET; break;
case '=': action = EQUALS; break;
default:
eprintf("unknow action: %s\n", mode);
exit(EXIT_FAILURE);
}
attr = 0;
for (p = ++mode; *p != '\0'; p++) {
switch (*p) {
case 'a': attr |= FS_APPEND_FL; break;
case 'A': attr |= FS_NOATIME_FL; break;
case 'c': attr |= FS_COMPR_FL; break;
case 'd': attr |= FS_NODUMP_FL; break;
case 'D': attr |= FS_DIRSYNC_FL; break;
case 'i': attr |= FS_IMMUTABLE_FL; break;
case 'j': attr |= FS_JOURNAL_DATA_FL; break;
case 's': attr |= FS_SECRM_FL; break;
case 'S': attr |= FS_SYNC_FL; break;
case 't': attr |= FS_NOTAIL_FL; break;
case 'T': attr |= FS_TOPDIR_FL; break;
case 'u': attr |= FS_UNRM_FL; break;
default:
eprintf("unknown option: %c\n", *p);
exit(EXIT_FAILURE);
}
}
fd = open(file, O_RDONLY);
if (fd == -1)
errExit("open failed: %s\n", file);
chattr(fd, attr, action, info);
if (close(fd) == -1)
errExit("close");
exit(EXIT_SUCCESS);
}
