OpenCoverage

uptime.c

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1/* GNU's uptime.-
2 Copyright (C) 1992-2018 Free Software Foundation, Inc.-
3-
4 This program is free software: you can redistribute it and/or modify-
5 it under the terms of the GNU General Public License as published by-
6 the Free Software Foundation, either version 3 of the License, or-
7 (at your option) any later version.-
8-
9 This program is distributed in the hope that it will be useful,-
10 but WITHOUT ANY WARRANTY; without even the implied warranty of-
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the-
12 GNU General Public License for more details.-
13-
14 You should have received a copy of the GNU General Public License-
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */-
16-
17/* Created by hacking who.c by Kaveh Ghazi ghazi@caip.rutgers.edu. */-
18-
19#include <config.h>-
20#include <getopt.h>-
21#include <stdio.h>-
22-
23#include <sys/types.h>-
24#include "system.h"-
25-
26#if HAVE_SYSCTL && HAVE_SYS_SYSCTL_H-
27# include <sys/sysctl.h>-
28#endif-
29-
30#if HAVE_OS_H-
31# include <OS.h>-
32#endif-
33-
34#include "c-strtod.h"-
35#include "die.h"-
36#include "error.h"-
37#include "long-options.h"-
38#include "quote.h"-
39#include "readutmp.h"-
40#include "fprintftime.h"-
41-
42/* The official name of this program (e.g., no 'g' prefix). */-
43#define PROGRAM_NAME "uptime"-
44-
45#define AUTHORS \-
46 proper_name ("Joseph Arceneaux"), \-
47 proper_name ("David MacKenzie"), \-
48 proper_name ("Kaveh Ghazi")-
49-
50static struct option const long_options[] =-
51{-
52 {NULL, 0, NULL, 0}-
53};-
54-
55static void-
56print_uptime (size_t n, const STRUCT_UTMP *this)-
57{-
58 size_t entries = 0;-
59 time_t boot_time = 0;-
60 time_t time_now;-
61 time_t uptime = 0;-
62 long int updays;-
63 int uphours;-
64 int upmins;-
65 struct tm *tmn;-
66 double avg[3];-
67 int loads;-
68#ifdef HAVE_PROC_UPTIME-
69 FILE *fp;-
70-
71 fp = fopen ("/proc/uptime", "r");-
72 if (fp != NULL)
fp != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
73 {-
74 char buf[BUFSIZ];-
75 char *b = fgets (buf, BUFSIZ, fp);-
76 if (b == buf)
b == bufDescription
TRUEnever evaluated
FALSEnever evaluated
0
77 {-
78 char *end_ptr;-
79 double upsecs = c_strtod (buf, &end_ptr);-
80 if (buf != end_ptr)
buf != end_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
0
81 uptime = (0 <= upsecs && upsecs < TYPE_MAXIMUM (time_t)
never executed: uptime = (0 <= upsecs && upsecs < ((time_t) (! (! ((time_t) 0 < (time_t) -1)) ? (time_t) -1 : ((((time_t) 1 << ((sizeof (time_t) * 8) - 2)) - 1) * 2 + 1))) ? upsecs : -1);
0 <= upsecsDescription
TRUEnever evaluated
FALSEnever evaluated
upsecs < ((tim... 1) * 2 + 1)))Description
TRUEnever evaluated
FALSEnever evaluated
0
82 ? upsecs : -1);
never executed: uptime = (0 <= upsecs && upsecs < ((time_t) (! (! ((time_t) 0 < (time_t) -1)) ? (time_t) -1 : ((((time_t) 1 << ((sizeof (time_t) * 8) - 2)) - 1) * 2 + 1))) ? upsecs : -1);
0
83 }
never executed: end of block
0
84-
85 fclose (fp);-
86 }
never executed: end of block
0
87#endif /* HAVE_PROC_UPTIME */-
88-
89#if HAVE_SYSCTL && defined CTL_KERN && defined KERN_BOOTTIME-
90 {-
91 /* FreeBSD specific: fetch sysctl "kern.boottime". */-
92 static int request[2] = { CTL_KERN, KERN_BOOTTIME };-
93 struct timeval result;-
94 size_t result_len = sizeof result;-
95-
96 if (sysctl (request, 2, &result, &result_len, NULL, 0) >= 0)-
97 boot_time = result.tv_sec;-
98 }-
99#endif-
100-
101#if HAVE_OS_H /* BeOS */-
102 {-
103 system_info si;-
104-
105 get_system_info (&si);-
106 boot_time = si.boot_time / 1000000;-
107 }-
108#endif-
109-
110#if HAVE_UTMPX_H || HAVE_UTMP_H-
111 /* Loop through all the utmp entries we just read and count up the valid-
112 ones, also in the process possibly gleaning boottime. */-
113 while (n--)
n--Description
TRUEnever evaluated
FALSEnever evaluated
0
114 {-
115 entries += IS_USER_PROCESS (this);
dead code: ((this)->ut_tv.tv_sec) != 0
((this)-> ut_user )[0]Description
TRUEnever evaluated
FALSEnever evaluated
((this)->ut_type == ( 7 ))Description
TRUEnever evaluated
FALSEnever evaluated
-
116 if (UT_TYPE_BOOT_TIME (this))
((this)->ut_type == ( 2 ))Description
TRUEnever evaluated
FALSEnever evaluated
0
117 boot_time = UT_TIME_MEMBER (this);
never executed: boot_time = ((this)->ut_tv.tv_sec);
0
118 ++this;-
119 }
never executed: end of block
0
120#else-
121 (void) n;-
122 (void) this;-
123#endif-
124-
125 time_now = time (NULL);-
126#if defined HAVE_PROC_UPTIME-
127 if (uptime == 0)
uptime == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
128#endif-
129 {-
130 if (boot_time == 0)
boot_time == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
131 die (EXIT_FAILURE, errno, _("couldn't get boot time"));
never executed: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, (*__errno_location ()), dcgettext (((void *)0), \"couldn't get boot time\", 5)), assume (false))" ")"); int _gl_dummy; })) ? ((error ( 1 , (*__errno_location ()) , dcgettext (((void *)0), "couldn't get boot time" , 5) ), (( 0 ) ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , (*__errno_location ()) , dcgettext (((void *)0), "couldn't get boot time" , 5) ), (( 0 ) ? (void) 0 : __builtin_unreachable ()))));
0
132 uptime = time_now - boot_time;-
133 }
never executed: end of block
0
134 updays = uptime / 86400;-
135 uphours = (uptime - (updays * 86400)) / 3600;-
136 upmins = (uptime - (updays * 86400) - (uphours * 3600)) / 60;-
137 tmn = localtime (&time_now);-
138 /* procps' version of uptime also prints the seconds field, but-
139 previous versions of coreutils don't. */-
140 if (tmn)
tmnDescription
TRUEnever evaluated
FALSEnever evaluated
0
141 /* TRANSLATORS: This prints the current clock time. */-
142 fprintftime (stdout, _(" %H:%M:%S "), tmn, 0, 0);
never executed: fprintftime ( stdout , dcgettext (((void *)0), " %H:%M:%S " , 5) , tmn, 0, 0);
0
143 else-
144 printf (_(" ??:???? "));
never executed: printf ( dcgettext (((void *)0), " ??:???? " , 5) );
0
145 if (uptime == (time_t) -1)
uptime == (time_t) -1Description
TRUEnever evaluated
FALSEnever evaluated
0
146 printf (_("up ???? days ??:??, "));
never executed: printf ( dcgettext (((void *)0), "up ???? days ??:??, " , 5) );
0
147 else-
148 {-
149 if (0 < updays)
0 < updaysDescription
TRUEnever evaluated
FALSEnever evaluated
0
150 printf (ngettext ("up %ld day %2d:%02d, ",
never executed: printf ( dcngettext (((void *)0), "up %ld day %2d:%02d, " , "up %ld days %2d:%02d, " , select_plural (updays) , 5) , updays, uphours, upmins);
0
151 "up %ld days %2d:%02d, ",
never executed: printf ( dcngettext (((void *)0), "up %ld day %2d:%02d, " , "up %ld days %2d:%02d, " , select_plural (updays) , 5) , updays, uphours, upmins);
0
152 select_plural (updays)),
never executed: printf ( dcngettext (((void *)0), "up %ld day %2d:%02d, " , "up %ld days %2d:%02d, " , select_plural (updays) , 5) , updays, uphours, upmins);
0
153 updays, uphours, upmins);
never executed: printf ( dcngettext (((void *)0), "up %ld day %2d:%02d, " , "up %ld days %2d:%02d, " , select_plural (updays) , 5) , updays, uphours, upmins);
0
154 else-
155 printf (_("up %2d:%02d, "), uphours, upmins);
never executed: printf ( dcgettext (((void *)0), "up %2d:%02d, " , 5) , uphours, upmins);
0
156 }-
157 printf (ngettext ("%lu user", "%lu users", select_plural (entries)),-
158 (unsigned long int) entries);-
159-
160 loads = getloadavg (avg, 3);-
161-
162 if (loads == -1)
loads == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
163 putchar ('\n');
never executed: putchar_unlocked ('\n');
0
164 else-
165 {-
166 if (loads > 0)
loads > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
167 printf (_(", load average: %.2f"), avg[0]);
never executed: printf ( dcgettext (((void *)0), ", load average: %.2f" , 5) , avg[0]);
0
168 if (loads > 1)
loads > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
169 printf (", %.2f", avg[1]);
never executed: printf (", %.2f", avg[1]);
0
170 if (loads > 2)
loads > 2Description
TRUEnever evaluated
FALSEnever evaluated
0
171 printf (", %.2f", avg[2]);
never executed: printf (", %.2f", avg[2]);
0
172 if (loads > 0)
loads > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
173 putchar ('\n');
never executed: putchar_unlocked ('\n');
0
174 }
never executed: end of block
0
175}-
176-
177/* Display the system uptime and the number of users on the system,-
178 according to utmp file FILENAME. Use read_utmp OPTIONS to read the-
179 utmp file. */-
180-
181static void-
182uptime (const char *filename, int options)-
183{-
184 size_t n_users;-
185 STRUCT_UTMP *utmp_buf = NULL;-
186-
187#if HAVE_UTMPX_H || HAVE_UTMP_H-
188 if (read_utmp (filename, &n_users, &utmp_buf, options) != 0)
read_utmp (fil... options) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
189 die (EXIT_FAILURE, errno, "%s", quotef (filename));
never executed: ((!!sizeof (struct { _Static_assert ( 1 , "verify_expr (" "1" ", " "(error (1, (*__errno_location ()), \"%s\", quotearg_n_style_colon (0, shell_escape_quoting_style, filename)), assume (false))" ")"); int _gl_dummy; })) ? ((error ( 1 , (*__errno_location ...(0, shell_escape_quoting_style, filename)), (( 0 ) ? (void) 0 : __builtin_unreachable ()))) : ((error ( 1 , (*__errno_location ()) , "%s", quotearg_n_style_colon (0, shell_escape_quoting_style, filename)), (( 0 ) ? (void) 0 : __builtin_unreachable ()))));
0
190#endif-
191-
192 print_uptime (n_users, utmp_buf);-
193-
194 IF_LINT (free (utmp_buf));-
195}
never executed: end of block
0
196-
197void-
198usage (int status)-
199{-
200 if (status != EXIT_SUCCESS)
status != 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • uptime
FALSEevaluated 3 times by 1 test
Evaluated by:
  • uptime
3
201 emit_try_help ();
executed 3 times by 1 test: end of block
Executed by:
  • uptime
3
202 else-
203 {-
204 printf (_("Usage: %s [OPTION]... [FILE]\n"), program_name);-
205 printf (_("\-
206Print the current time, the length of time the system has been up,\n\-
207the number of users on the system, and the average number of jobs\n\-
208in the run queue over the last 1, 5 and 15 minutes."));-
209#ifdef __linux__-
210 /* It would be better to introduce a configure test for this,-
211 but such a test is hard to write. For the moment then, we-
212 have a hack which depends on the preprocessor used at compile-
213 time to tell us what the running kernel is. Ugh. */-
214 printf (_(" \-
215Processes in\n\-
216an uninterruptible sleep state also contribute to the load average.\n"));-
217#else-
218 printf (_("\n"));-
219#endif-
220 printf (_("\-
221If FILE is not specified, use %s. %s as FILE is common.\n\-
222\n"),-
223 UTMP_FILE, WTMP_FILE);-
224 fputs (HELP_OPTION_DESCRIPTION, stdout);-
225 fputs (VERSION_OPTION_DESCRIPTION, stdout);-
226 emit_ancillary_info (PROGRAM_NAME);-
227 }
executed 3 times by 1 test: end of block
Executed by:
  • uptime
3
228 exit (status);
executed 6 times by 1 test: exit (status);
Executed by:
  • uptime
6
229}-
230-
231int-
232main (int argc, char **argv)-
233{-
234 initialize_main (&argc, &argv);-
235 set_program_name (argv[0]);-
236 setlocale (LC_ALL, "");-
237 bindtextdomain (PACKAGE, LOCALEDIR);-
238 textdomain (PACKAGE);-
239-
240 atexit (close_stdout);-
241-
242 parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, Version,-
243 usage, AUTHORS, (char const *) NULL);-
244 if (getopt_long (argc, argv, "", long_options, NULL) != -1)
getopt_long (a...d *)0) ) != -1Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • uptime
FALSEnever evaluated
0-3
245 usage (EXIT_FAILURE);
executed 3 times by 1 test: usage ( 1 );
Executed by:
  • uptime
3
246-
247 switch (argc - optind)-
248 {-
249 case 0: /* uptime */
never executed: case 0:
0
250 uptime (UTMP_FILE, READ_UTMP_CHECK_PIDS);-
251 break;
never executed: break;
0
252-
253 case 1: /* uptime <utmp file> */
never executed: case 1:
0
254 uptime (argv[optind], 0);-
255 break;
never executed: break;
0
256-
257 default: /* lose */
never executed: default:
0
258 error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));-
259 usage (EXIT_FAILURE);-
260 }
never executed: end of block
0
261-
262 return EXIT_SUCCESS;
never executed: return 0 ;
0
263}-
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