diff options
Diffstat (limited to 'src/faudit/pid.c')
-rw-r--r-- | src/faudit/pid.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/src/faudit/pid.c b/src/faudit/pid.c deleted file mode 100644 index 0a277ddc2..000000000 --- a/src/faudit/pid.c +++ /dev/null | |||
@@ -1,99 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2014-2020 Firejail Authors | ||
3 | * | ||
4 | * This file is part of firejail project | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License along | ||
17 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
19 | */ | ||
20 | #include "faudit.h" | ||
21 | |||
22 | void pid_test(void) { | ||
23 | static char *kern_proc[] = { | ||
24 | "kthreadd", | ||
25 | "ksoftirqd", | ||
26 | "kworker", | ||
27 | "rcu_sched", | ||
28 | "rcu_bh", | ||
29 | NULL // NULL terminated list | ||
30 | }; | ||
31 | int i; | ||
32 | |||
33 | // look at the first 10 processes | ||
34 | int not_visible = 1; | ||
35 | for (i = 1; i <= 10; i++) { | ||
36 | struct stat s; | ||
37 | char *fname; | ||
38 | if (asprintf(&fname, "/proc/%d/comm", i) == -1) | ||
39 | errExit("asprintf"); | ||
40 | if (stat(fname, &s) == -1) { | ||
41 | free(fname); | ||
42 | continue; | ||
43 | } | ||
44 | |||
45 | // open file | ||
46 | /* coverity[toctou] */ | ||
47 | FILE *fp = fopen(fname, "r"); | ||
48 | if (!fp) { | ||
49 | free(fname); | ||
50 | continue; | ||
51 | } | ||
52 | |||
53 | // read file | ||
54 | char buf[100]; | ||
55 | if (fgets(buf, 10, fp) == NULL) { | ||
56 | fclose(fp); | ||
57 | free(fname); | ||
58 | continue; | ||
59 | } | ||
60 | not_visible = 0; | ||
61 | |||
62 | // clean /n | ||
63 | char *ptr; | ||
64 | if ((ptr = strchr(buf, '\n')) != NULL) | ||
65 | *ptr = '\0'; | ||
66 | |||
67 | // check process name against the kernel list | ||
68 | int j = 0; | ||
69 | while (kern_proc[j] != NULL) { | ||
70 | if (strncmp(buf, kern_proc[j], strlen(kern_proc[j])) == 0) { | ||
71 | fclose(fp); | ||
72 | free(fname); | ||
73 | printf("BAD: Process %d is not running in a PID namespace. ", getpid()); | ||
74 | printf("Are you sure you're running in a sandbox?\n"); | ||
75 | return; | ||
76 | } | ||
77 | j++; | ||
78 | } | ||
79 | |||
80 | fclose(fp); | ||
81 | free(fname); | ||
82 | } | ||
83 | |||
84 | pid_t pid = getpid(); | ||
85 | if (not_visible && pid > 100) | ||
86 | printf("BAD: Process %d is not running in a PID namespace.\n", pid); | ||
87 | else | ||
88 | printf("GOOD: process %d is running in a PID namespace.\n", pid); | ||
89 | |||
90 | // try to guess the type of container/sandbox | ||
91 | char *str = getenv("container"); | ||
92 | if (str) | ||
93 | printf("INFO: container/sandbox %s.\n", str); | ||
94 | else { | ||
95 | str = getenv("SNAP"); | ||
96 | if (str) | ||
97 | printf("INFO: this is a snap package\n"); | ||
98 | } | ||
99 | } | ||