~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/tools/testing/selftests/proc/proc-self-map-files-001.c

Version: ~ [ linux-6.0-rc6 ] ~ [ linux-5.19.10 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.69 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.144 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.214 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.259 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.294 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.329 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.302 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Copyright © 2018 Alexey Dobriyan <adobriyan@gmail.com>
  3  *
  4  * Permission to use, copy, modify, and distribute this software for any
  5  * purpose with or without fee is hereby granted, provided that the above
  6  * copyright notice and this permission notice appear in all copies.
  7  *
  8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15  */
 16 /* Test readlink /proc/self/map_files/... */
 17 #include <errno.h>
 18 #include <sys/types.h>
 19 #include <sys/stat.h>
 20 #include <fcntl.h>
 21 #include <stdio.h>
 22 #include <unistd.h>
 23 #include <sys/mman.h>
 24 #include <stdlib.h>
 25 
 26 static void pass(const char *fmt, unsigned long a, unsigned long b)
 27 {
 28         char name[64];
 29         char buf[64];
 30 
 31         snprintf(name, sizeof(name), fmt, a, b);
 32         if (readlink(name, buf, sizeof(buf)) == -1)
 33                 exit(1);
 34 }
 35 
 36 static void fail(const char *fmt, unsigned long a, unsigned long b)
 37 {
 38         char name[64];
 39         char buf[64];
 40 
 41         snprintf(name, sizeof(name), fmt, a, b);
 42         if (readlink(name, buf, sizeof(buf)) == -1 && errno == ENOENT)
 43                 return;
 44         exit(1);
 45 }
 46 
 47 int main(void)
 48 {
 49         const unsigned int PAGE_SIZE = sysconf(_SC_PAGESIZE);
 50         void *p;
 51         int fd;
 52         unsigned long a, b;
 53 
 54         fd = open("/dev/zero", O_RDONLY);
 55         if (fd == -1)
 56                 return 1;
 57 
 58         p = mmap(NULL, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE, fd, 0);
 59         if (p == MAP_FAILED)
 60                 return 1;
 61 
 62         a = (unsigned long)p;
 63         b = (unsigned long)p + PAGE_SIZE;
 64 
 65         pass("/proc/self/map_files/%lx-%lx", a, b);
 66         fail("/proc/self/map_files/ %lx-%lx", a, b);
 67         fail("/proc/self/map_files/%lx -%lx", a, b);
 68         fail("/proc/self/map_files/%lx- %lx", a, b);
 69         fail("/proc/self/map_files/%lx-%lx ", a, b);
 70         fail("/proc/self/map_files/0%lx-%lx", a, b);
 71         fail("/proc/self/map_files/%lx-0%lx", a, b);
 72         if (sizeof(long) == 4) {
 73                 fail("/proc/self/map_files/100000000%lx-%lx", a, b);
 74                 fail("/proc/self/map_files/%lx-100000000%lx", a, b);
 75         } else if (sizeof(long) == 8) {
 76                 fail("/proc/self/map_files/10000000000000000%lx-%lx", a, b);
 77                 fail("/proc/self/map_files/%lx-10000000000000000%lx", a, b);
 78         } else
 79                 return 1;
 80 
 81         return 0;
 82 }
 83 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp