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| /* SPDX-License-Identifier: GPL-2.0 */
| #include <syscall.h>
| #include <errno.h>
| #include <stdio.h>
| #include <stdlib.h>
|
| #ifndef MLOCK_ONFAULT
| #define MLOCK_ONFAULT 1
| #endif
|
| #ifndef MCL_ONFAULT
| #define MCL_ONFAULT (MCL_FUTURE << 1)
| #endif
|
| static int mlock2_(void *start, size_t len, int flags)
| {
| #ifdef __NR_mlock2
| return syscall(__NR_mlock2, start, len, flags);
| #else
| errno = ENOSYS;
| return -1;
| #endif
| }
|
| static FILE *seek_to_smaps_entry(unsigned long addr)
| {
| FILE *file;
| char *line = NULL;
| size_t size = 0;
| unsigned long start, end;
| char perms[5];
| unsigned long offset;
| char dev[32];
| unsigned long inode;
| char path[BUFSIZ];
|
| file = fopen("/proc/self/smaps", "r");
| if (!file) {
| perror("fopen smaps");
| _exit(1);
| }
|
| while (getline(&line, &size, file) > 0) {
| if (sscanf(line, "%lx-%lx %s %lx %s %lu %s\n",
| &start, &end, perms, &offset, dev, &inode, path) < 6)
| goto next;
|
| if (start <= addr && addr < end)
| goto out;
|
| next:
| free(line);
| line = NULL;
| size = 0;
| }
|
| fclose(file);
| file = NULL;
|
| out:
| free(line);
| return file;
| }
|
|
