modpost: add -T option to read module names from file/stdin.

Because there are too many modules in the world.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f7a0392..1f90961 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <limits.h>
 #include <stdbool.h>
 #include "modpost.h"
 #include "../../include/generated/autoconf.h"
@@ -1763,6 +1764,27 @@ static void read_symbols(char *modname)
                mod->unres = alloc_symbol("module_layout", 0, mod->unres);
 }
 
+static void read_symbols_from_files(const char *filename)
+{
+       FILE *in = stdin;
+       char fname[PATH_MAX];
+
+       if (strcmp(filename, "-") != 0) {
+               in = fopen(filename, "r");
+               if (!in)
+                       fatal("Can't open filenames file %s: %m", filename);
+       }
+
+       while (fgets(fname, PATH_MAX, in) != NULL) {
+               if (strends(fname, "\n"))
+                       fname[strlen(fname)-1] = '\0';
+               read_symbols(fname);
+       }
+
+       if (in != stdin)
+               fclose(in);
+}
+
 #define SZ 500
 
 /* We first write the generated file into memory using the
@@ -2124,13 +2146,13 @@ int main(int argc, char **argv)
        struct module *mod;
        struct buffer buf = { };
        char *kernel_read = NULL, *module_read = NULL;
-       char *dump_write = NULL;
+       char *dump_write = NULL, *files_source = NULL;
        int opt;
        int err;
        struct ext_sym_list *extsym_iter;
        struct ext_sym_list *extsym_start = NULL;
 
-       while ((opt = getopt(argc, argv, "i:I:e:msSo:awM:K:")) != -1) {
+       while ((opt = getopt(argc, argv, "i:I:e:msST:o:awM:K:")) != -1) {
                switch (opt) {
                case 'i':
                        kernel_read = optarg;
@@ -2162,6 +2184,9 @@ int main(int argc, char **argv)
                case 'S':
                        sec_mismatch_verbose = 0;
                        break;
+               case 'T':
+                       files_source = optarg;
+                       break;
                case 'w':
                        warn_unresolved = 1;
                        break;
@@ -2184,6 +2209,9 @@ int main(int argc, char **argv)
        while (optind < argc)
                read_symbols(argv[optind++]);
 
+       if (files_source)
+               read_symbols_from_files(files_source);
+
        for (mod = modules; mod; mod = mod->next) {
                if (mod->skip)
                        continue;