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/*
* Copyright (C) 2014-2020 Firejail Authors
*
* This file is part of firejail project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BUFMAX 4096
int main(int argc, char **argv) {
if (argc != 2) {
printf("usage: %s /usr/include/x86_64-linux-gnu/bits/syscall.h\n", argv[0]);
return 1;
}
//open file
FILE *fp = fopen(argv[1], "r");
if (!fp) {
fprintf(stderr, "Error: cannot open file\n");
return 1;
}
// read file
char buf[BUFMAX];
while (fgets(buf, BUFMAX, fp)) {
// cleanup
char *start = buf;
while (*start == ' ' || *start == '\t')
start++;
char *end = strchr(start, '\n');
if (end)
*end = '\0';
// parsing
if (strncmp(start, "# error", 7) == 0)
continue;
if (strncmp(start, "#endif", 6) == 0)
printf("%s\n", start);
if (strncmp(start, "#endif", 6) == 0)
printf("%s\n", start);
else if (strncmp(start, "#if", 3) == 0)
printf("%s\n", start);
else if (strncmp(start, "#define", 7) == 0) {
// extract data
char *ptr1 = strstr(start, "SYS_");
char *ptr2 = strstr(start, "__NR_");
if (!ptr1 || !ptr2) {
fprintf(stderr, "Error: cannot parse \"%s\"\n", start);
fclose(fp);
return 1;
}
*(ptr2 - 1) = '\0';
char *ptr3 = ptr1;
while (*ptr3 != ' ' && *ptr3 != '\t' && *ptr3 != '\0')
ptr3++;
*ptr3 = '\0';
ptr3 = ptr2;
while (*ptr3 != ' ' && *ptr3 != '\t' && *ptr3 != '\0')
ptr3++;
*ptr3 = '\0';
ptr3 = ptr1;
while (*ptr3 != '_')
ptr3++;
ptr3++;
printf("#ifdef %s\n", ptr1);
printf("#ifdef %s\n", ptr2);
printf("\t{\"%s\", %s},\n", ptr3, ptr2);
printf("#endif\n");
printf("#endif\n");
}
}
fclose(fp);
return 0;
}
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