Currently, users who want to exclude multiple specific files or paths must pass them one-by-one using --exclude-path or --exclude-regex via the command line. This becomes cumbersome for complex build systems with dozens of exclusions.
This patch introduces an \`--exclude-from=FILE\` flag to mkfs.erofs. Similar to standard archiving tools, it allows users to supply a text file containing a list of paths or regexes to exclude, which are read line-by-line and applied to the EROFS build process. Signed-off-by: Nithurshen <[email protected]> --- mkfs/main.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/mkfs/main.c b/mkfs/main.c index 07ef086..a6cd251 100644 --- a/mkfs/main.c +++ b/mkfs/main.c @@ -39,6 +39,7 @@ static struct option long_options[] = { {"help", no_argument, 0, 'h'}, {"exclude-path", required_argument, NULL, 2}, {"exclude-regex", required_argument, NULL, 3}, + {"exclude-from", required_argument, NULL, 540}, #ifdef HAVE_LIBSELINUX {"file-contexts", required_argument, NULL, 4}, #endif @@ -199,6 +200,7 @@ static void usage(int argc, char **argv) " --dsunit=# align all data block addresses to multiples of #\n" " --exclude-path=X avoid including file X (X = exact literal path)\n" " --exclude-regex=X avoid including files that match X (X = regular expression)\n" + " --exclude-from=X avoid including files listed in file X\n" #ifdef HAVE_LIBSELINUX " --file-contexts=X specify a file contexts file to setup selinux labels\n" #endif @@ -1246,6 +1248,39 @@ static int mkfs_parse_options_cfg(struct erofs_importer_params *params, case 7: params->fixed_uid = params->fixed_gid = 0; break; + case 540: { + FILE *f = fopen(optarg, "r"); + if (!f) { + erofs_err("failed to open exclude file: %s", optarg); + return -errno; + } + + char *line = NULL; + size_t len = 0; + ssize_t read; + + while ((read = getline(&line, &len, f)) != -1) { + if (read > 0 && line[read - 1] == '\n') { + line[read - 1] = '\0'; + read--; + } + + if (read == 0) continue; + + opt = erofs_parse_exclude_path(line, false); + if (opt) { + erofs_err("failed to parse exclude path from file: %s", + erofs_strerror(opt)); + free(line); + fclose(f); + return opt; + } + } + free(line); + fclose(f); + break; + } + #ifndef NDEBUG case 8: cfg.c_random_pclusterblks = true; -- 2.51.0
