int do_link(const char *oldpath, const char *newpath, struct stat *statp, struct config *conf, bool overwrite)
{
/* Avoid creating too many hardlinks */
if(statp->st_nlink >= (unsigned int)conf->max_hardlinks)
{
return duplicate_file(oldpath, newpath);
}
else if(link(oldpath, newpath))
{
if(overwrite && errno==EEXIST)
{
unlink(newpath);
if(link(oldpath, newpath))
{
logp("could not hard link '%s' to '%s': %s\n",
newpath, oldpath, strerror(errno));
return -1;
}
else
{
logp("Successful hard link of '%s' to '%s' after unlinking the former\n", newpath, oldpath);
return 0;
}
}
return -1;
}
return 0;
}
int do_link(const char *oldpath, const char *newpath, struct stat *statp,
struct conf **confs, uint8_t overwrite)
{
/* Avoid creating too many hardlinks */
if(confs
&& statp->st_nlink >= (unsigned int)get_int(confs[OPT_MAX_HARDLINKS]))
{
return duplicate_file(oldpath, newpath);
}
else if(link(oldpath, newpath))
{
if(overwrite && errno==EEXIST)
{
unlink(newpath);
if(!link(oldpath, newpath))
{
//logp("Successful hard link of '%s' to '%s' after unlinking the former\n", newpath, oldpath);
return 0;
}
}
logp("could not hard link '%s' to '%s': %s\n",
newpath, oldpath, strerror(errno));
return -1;
}
return 0;
}
int main(int argc, char **argv) {
#if 0
{
//system("cat /proc/self/status");
int i;
for (i = 0; i < argc; i++)
printf("*%s* ", argv[i]);
printf("\n");
}
#endif
if (argc != 3) {
fprintf(stderr, "Error fcopy: files missing\n");
usage();
exit(1);
}
// check the two files; remove ending /
char *src = argv[1];
int len = strlen(src);
if (src[len - 1] == '/')
src[len - 1] = '\0';
if (strcspn(src, "\\*&!?\"'<>%^(){}[];,") != (size_t)len) {
fprintf(stderr, "Error fcopy: invalid file name %s\n", src);
exit(1);
}
char *dest = argv[2];
len = strlen(dest);
if (dest[len - 1] == '/')
dest[len - 1] = '\0';
if (strcspn(dest, "\\*&!?\"'<>%^(){}[];,~") != (size_t)len) {
fprintf(stderr, "Error fcopy: invalid file name %s\n", dest);
exit(1);
}
// the destination should be a directory;
struct stat s;
if (stat(dest, &s) == -1 ||
!S_ISDIR(s.st_mode)) {
fprintf(stderr, "Error fcopy: invalid destination directory\n");
exit(1);
}
// copy files
if (lstat(src, &s) == -1) {
fprintf(stderr, "Error fcopy: cannot find source file\n");
exit(1);
}
if (S_ISDIR(s.st_mode))
duplicate_dir(src, dest, &s);
else if (S_ISREG(s.st_mode))
duplicate_file(src, dest, &s);
else if (S_ISLNK(s.st_mode))
duplicate_link(src, dest, &s);
else {
fprintf(stderr, "Error fcopy: source file unsupported\n");
exit(1);
}
return 0;
}
