OpenCoverage

getlimits.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/coreutils/src/src/getlimits.c
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1/* getlimits - print various platform dependent limits.-
2 Copyright (C) 2008-2018 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/* Written by Pádraig Brady */-
18-
19#include <config.h> /* sets _FILE_OFFSET_BITS=64 etc. */-
20#include <stdio.h>-
21#include <sys/types.h>-
22#include <float.h>-
23-
24#include "ftoastr.h"-
25#include "system.h"-
26#include "long-options.h"-
27-
28#define PROGRAM_NAME "getlimits"-
29-
30#define AUTHORS proper_name ("Padraig Brady")-
31-
32#ifndef TIME_T_MAX-
33# define TIME_T_MAX TYPE_MAXIMUM (time_t)-
34#endif-
35-
36#ifndef TIME_T_MIN-
37# define TIME_T_MIN TYPE_MINIMUM (time_t)-
38#endif-
39-
40#ifndef SSIZE_MIN-
41# define SSIZE_MIN TYPE_MINIMUM (ssize_t)-
42#endif-
43-
44#ifndef PID_T_MIN-
45# define PID_T_MIN TYPE_MINIMUM (pid_t)-
46#endif-
47-
48/* These are not interesting to print.-
49 * Instead of these defines it would be nice to be able to do-
50 * #ifdef (TYPE##_MIN) in function macro below. */-
51#define SIZE_MIN 0-
52#define UCHAR_MIN 0-
53#define UINT_MIN 0-
54#define ULONG_MIN 0-
55#define UINTMAX_MIN 0-
56#define UID_T_MIN 0-
57#define GID_T_MIN 0-
58-
59void-
60usage (int status)-
61{-
62 if (status != EXIT_SUCCESS)
status != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
63 emit_try_help ();
never executed: end of block
0
64 else-
65 {-
66 printf (_("\-
67Usage: %s\n\-
68"), program_name);-
69-
70 fputs (_("\-
71Output platform dependent limits in a format useful for shell scripts.\n\-
72\n\-
73"), stdout);-
74 fputs (HELP_OPTION_DESCRIPTION, stdout);-
75 fputs (VERSION_OPTION_DESCRIPTION, stdout);-
76 emit_ancillary_info (PROGRAM_NAME);-
77 }
never executed: end of block
0
78 exit (status);
never executed: exit (status);
0
79}-
80-
81/* Add one to the absolute value of the number whose textual-
82 representation is BUF + 1. Do this in-place, in the buffer.-
83 Return a pointer to the result, which is normally BUF + 1, but is-
84 BUF if the representation grew in size. */-
85static char const *-
86decimal_absval_add_one (char *buf)-
87{-
88 bool negative = (buf[1] == '-');-
89 char *absnum = buf + 1 + negative;-
90 char *p = absnum + strlen (absnum);-
91 absnum[-1] = '0';-
92 while (*--p == '9')
*--p == '9'Description
TRUEnever evaluated
FALSEevaluated 729 times by 1 test
Evaluated by:
  • getlimits
0-729
93 *p = '0';
never executed: *p = '0';
0
94 ++*p;-
95 char *result = MIN (absnum, p);
(( absnum )<( p ))Description
TRUEevaluated 729 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-729
96 if (negative)
negativeDescription
TRUEevaluated 270 times by 1 test
Evaluated by:
  • getlimits
FALSEevaluated 459 times by 1 test
Evaluated by:
  • getlimits
270-459
97 *--result = '-';
executed 270 times by 1 test: *--result = '-';
Executed by:
  • getlimits
270
98 return result;
executed 729 times by 1 test: return result;
Executed by:
  • getlimits
729
99}-
100-
101#define PRINT_FLOATTYPE(N, T, FTOASTR, BUFSIZE) \-
102static void \-
103N (T x) \-
104{ \-
105 char buf[BUFSIZE]; \-
106 FTOASTR (buf, sizeof buf, FTOASTR_LEFT_JUSTIFY, 0, x); \-
107 puts (buf); \-
108}-
109-
110PRINT_FLOATTYPE (print_FLT, float, ftoastr, FLT_BUFSIZE_BOUND)
executed 54 times by 1 test: end of block
Executed by:
  • getlimits
54
111PRINT_FLOATTYPE (print_DBL, double, dtoastr, DBL_BUFSIZE_BOUND)
executed 54 times by 1 test: end of block
Executed by:
  • getlimits
54
112PRINT_FLOATTYPE (print_LDBL, long double, ldtoastr, LDBL_BUFSIZE_BOUND)
executed 54 times by 1 test: end of block
Executed by:
  • getlimits
54
113-
114int-
115main (int argc, char **argv)-
116{-
117 char limit[1 + MAX (INT_BUFSIZE_BOUND (intmax_t),-
118 INT_BUFSIZE_BOUND (uintmax_t))];-
119-
120 initialize_main (&argc, &argv);-
121 set_program_name (argv[0]);-
122 setlocale (LC_ALL, "");-
123 bindtextdomain (PACKAGE, LOCALEDIR);-
124 textdomain (PACKAGE);-
125-
126 initialize_exit_failure (EXIT_FAILURE);-
127 atexit (close_stdout);-
128-
129 parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, VERSION,-
130 usage, AUTHORS, (char const *) NULL);-
131-
132#define print_int(TYPE) \-
133 sprintf (limit + 1, "%"PRIuMAX, (uintmax_t) TYPE##_MAX); \-
134 printf (#TYPE"_MAX=%s\n", limit + 1); \-
135 printf (#TYPE"_OFLOW=%s\n", decimal_absval_add_one (limit)); \-
136 if (TYPE##_MIN) \-
137 { \-
138 sprintf (limit + 1, "%"PRIdMAX, (intmax_t) TYPE##_MIN); \-
139 printf (#TYPE"_MIN=%s\n", limit + 1); \-
140 printf (#TYPE"_UFLOW=%s\n", decimal_absval_add_one (limit)); \-
141 }-
142-
143#define print_float(TYPE) \-
144 printf (#TYPE"_MIN="); print_##TYPE (TYPE##_MIN); \-
145 printf (#TYPE"_MAX="); print_##TYPE (TYPE##_MAX);-
146-
147 /* Variable sized ints */-
148 print_int (CHAR);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-0x7f - 1)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
149 print_int (SCHAR);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-0x7f - 1)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
150 print_int (UCHAR);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("UCHAR""_MIN=%s\n", limit + 1); printf ("UCHAR""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
151 print_int (SHRT);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-0x7fff - 1)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
152 print_int (INT);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-0x7fffffff - 1)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
153 print_int (UINT);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("UINT""_MIN=%s\n", limit + 1); printf ("UINT""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
154 print_int (LONG);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-0x7fffffffffffffffL - 1L)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
155 print_int (ULONG);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("ULONG""_MIN=%s\n", limit + 1); printf ("ULONG""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
156 print_int (SIZE);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("SIZE""_MIN=%s\n", limit + 1); printf ("SIZE""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
157 print_int (SSIZE);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
((ssize_t) ~ (...1) * 2 + 1))))Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
158 print_int (TIME_T);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
((time_t) ~ ((...1) * 2 + 1))))Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
159 print_int (UID_T);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("UID_T""_MIN=%s\n", limit + 1); printf ("UID_T""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
160 print_int (GID_T);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("GID_T""_MIN=%s\n", limit + 1); printf ("GID_T""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
161 print_int (PID_T);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
((pid_t) ~ ((p...1) * 2 + 1))))Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
162 print_int (OFF_T);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
((off_t) ~ ((o...1) * 2 + 1))))Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
163 print_int (INTMAX);
executed 27 times by 1 test: end of block
Executed by:
  • getlimits
(-9223372036854775807L -1)Description
TRUEevaluated 27 times by 1 test
Evaluated by:
  • getlimits
FALSEnever evaluated
0-27
164 print_int (UINTMAX);
dead code: { sprintf (limit + 1, "%" "l" "d" , (intmax_t) 0); printf ("UINTMAX""_MIN=%s\n", limit + 1); printf ("UINTMAX""_UFLOW=%s\n", decimal_absval_add_one (limit)); }
-
165-
166 /* Variable sized floats */-
167 print_float (FLT);-
168 print_float (DBL);-
169 print_float (LDBL);-
170-
171 return EXIT_SUCCESS;
executed 27 times by 1 test: return 0 ;
Executed by:
  • getlimits
27
172}-
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