OpenCoverage

readlink.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/coreutils/src/src/readlink.c
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1/* readlink -- display value of a symbolic link.-
2 Copyright (C) 2002-2018 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 Dmitry V. Levin */-
18-
19#include <config.h>-
20#include <stdio.h>-
21#include <getopt.h>-
22#include <sys/types.h>-
23-
24#include "system.h"-
25#include "canonicalize.h"-
26#include "error.h"-
27#include "areadlink.h"-
28-
29/* The official name of this program (e.g., no 'g' prefix). */-
30#define PROGRAM_NAME "readlink"-
31-
32#define AUTHORS proper_name ("Dmitry V. Levin")-
33-
34/* If true, do not output the trailing newline. */-
35static bool no_newline;-
36-
37/* If true, report error messages. */-
38static bool verbose;-
39-
40static struct option const longopts[] =-
41{-
42 {"canonicalize", no_argument, NULL, 'f'},-
43 {"canonicalize-existing", no_argument, NULL, 'e'},-
44 {"canonicalize-missing", no_argument, NULL, 'm'},-
45 {"no-newline", no_argument, NULL, 'n'},-
46 {"quiet", no_argument, NULL, 'q'},-
47 {"silent", no_argument, NULL, 's'},-
48 {"verbose", no_argument, NULL, 'v'},-
49 {"zero", no_argument, NULL, 'z'},-
50 {GETOPT_HELP_OPTION_DECL},-
51 {GETOPT_VERSION_OPTION_DECL},-
52 {NULL, 0, NULL, 0}-
53};-
54-
55void-
56usage (int status)-
57{-
58 if (status != EXIT_SUCCESS)
status != 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 19 times by 1 test
Evaluated by:
  • readlink
3-19
59 emit_try_help ();
executed 3 times by 1 test: end of block
Executed by:
  • readlink
3
60 else-
61 {-
62 printf (_("Usage: %s [OPTION]... FILE...\n"), program_name);-
63 fputs (_("Print value of a symbolic link or canonical file name\n\n"),-
64 stdout);-
65 fputs (_("\-
66 -f, --canonicalize canonicalize by following every symlink in\n\-
67 every component of the given name recursively;\-
68\n\-
69 all but the last component must exist\n\-
70 -e, --canonicalize-existing canonicalize by following every symlink in\n\-
71 every component of the given name recursively,\-
72\n\-
73 all components must exist\n\-
74"), stdout);-
75 fputs (_("\-
76 -m, --canonicalize-missing canonicalize by following every symlink in\n\-
77 every component of the given name recursively,\-
78\n\-
79 without requirements on components existence\n\-
80 -n, --no-newline do not output the trailing delimiter\n\-
81 -q, --quiet\n\-
82 -s, --silent suppress most error messages (on by default)\n\-
83 -v, --verbose report error messages\n\-
84 -z, --zero end each output line with NUL, not newline\n\-
85"), stdout);-
86 fputs (HELP_OPTION_DESCRIPTION, stdout);-
87 fputs (VERSION_OPTION_DESCRIPTION, stdout);-
88 emit_ancillary_info (PROGRAM_NAME);-
89 }
executed 19 times by 1 test: end of block
Executed by:
  • readlink
19
90 exit (status);
executed 22 times by 1 test: exit (status);
Executed by:
  • readlink
22
91}-
92-
93int-
94main (int argc, char **argv)-
95{-
96 /* If not -1, use this method to canonicalize. */-
97 int can_mode = -1;-
98 int status = EXIT_SUCCESS;-
99 int optc;-
100 bool use_nuls = false;-
101-
102 initialize_main (&argc, &argv);-
103 set_program_name (argv[0]);-
104 setlocale (LC_ALL, "");-
105 bindtextdomain (PACKAGE, LOCALEDIR);-
106 textdomain (PACKAGE);-
107-
108 atexit (close_stdout);-
109-
110 while ((optc = getopt_long (argc, argv, "efmnqsvz", longopts, NULL)) != -1)
(optc = getopt... *)0) )) != -1Description
TRUEevaluated 256 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 216 times by 1 test
Evaluated by:
  • readlink
216-256
111 {-
112 switch (optc)-
113 {-
114 case 'e':
executed 63 times by 1 test: case 'e':
Executed by:
  • readlink
63
115 can_mode = CAN_EXISTING;-
116 break;
executed 63 times by 1 test: break;
Executed by:
  • readlink
63
117 case 'f':
executed 73 times by 1 test: case 'f':
Executed by:
  • readlink
73
118 can_mode = CAN_ALL_BUT_LAST;-
119 break;
executed 73 times by 1 test: break;
Executed by:
  • readlink
73
120 case 'm':
executed 67 times by 1 test: case 'm':
Executed by:
  • readlink
67
121 can_mode = CAN_MISSING;-
122 break;
executed 67 times by 1 test: break;
Executed by:
  • readlink
67
123 case 'n':
executed 5 times by 1 test: case 'n':
Executed by:
  • readlink
5
124 no_newline = true;-
125 break;
executed 5 times by 1 test: break;
Executed by:
  • readlink
5
126 case 'q':
executed 2 times by 1 test: case 'q':
Executed by:
  • readlink
2
127 case 's':
executed 2 times by 1 test: case 's':
Executed by:
  • readlink
2
128 verbose = false;-
129 break;
executed 4 times by 1 test: break;
Executed by:
  • readlink
4
130 case 'v':
executed 6 times by 1 test: case 'v':
Executed by:
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6
131 verbose = true;-
132 break;
executed 6 times by 1 test: break;
Executed by:
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6
133 case 'z':
executed 6 times by 1 test: case 'z':
Executed by:
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6
134 use_nuls = true;-
135 break;
executed 6 times by 1 test: break;
Executed by:
  • readlink
6
136 case_GETOPT_HELP_CHAR;
never executed: break;
executed 19 times by 1 test: case GETOPT_HELP_CHAR:
Executed by:
  • readlink
0-19
137 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
executed 10 times by 1 test: exit ( 0 );
Executed by:
  • readlink
never executed: break;
executed 10 times by 1 test: case GETOPT_VERSION_CHAR:
Executed by:
  • readlink
0-10
138 default:
executed 3 times by 1 test: default:
Executed by:
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3
139 usage (EXIT_FAILURE);-
140 }
never executed: end of block
0
141 }-
142-
143 if (optind >= argc)
optind >= argcDescription
TRUEnever evaluated
FALSEevaluated 216 times by 1 test
Evaluated by:
  • readlink
0-216
144 {-
145 error (0, 0, _("missing operand"));-
146 usage (EXIT_FAILURE);-
147 }
never executed: end of block
0
148-
149 if (argc - optind > 1)
argc - optind > 1Description
TRUEevaluated 7 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 209 times by 1 test
Evaluated by:
  • readlink
7-209
150 {-
151 if (no_newline)
no_newlineDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 5 times by 1 test
Evaluated by:
  • readlink
2-5
152 error (0, 0, _("ignoring --no-newline with multiple arguments"));
executed 2 times by 1 test: error (0, 0, dcgettext (((void *)0), "ignoring --no-newline with multiple arguments" , 5) );
Executed by:
  • readlink
2
153 no_newline = false;-
154 }
executed 7 times by 1 test: end of block
Executed by:
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7
155-
156 for (; optind < argc; ++optind)
optind < argcDescription
TRUEevaluated 224 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 216 times by 1 test
Evaluated by:
  • readlink
216-224
157 {-
158 const char *fname = argv[optind];-
159 char *value = (can_mode != -1
can_mode != -1Description
TRUEevaluated 201 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 23 times by 1 test
Evaluated by:
  • readlink
23-201
160 ? canonicalize_filename_mode (fname, can_mode)-
161 : areadlink_with_size (fname, 63));-
162 if (value)
valueDescription
TRUEevaluated 154 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 70 times by 1 test
Evaluated by:
  • readlink
70-154
163 {-
164 fputs (value, stdout);-
165 if (! no_newline)
! no_newlineDescription
TRUEevaluated 153 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 1 time by 1 test
Evaluated by:
  • readlink
1-153
166 putchar (use_nuls ? '\0' : '\n');
executed 153 times by 1 test: putchar_unlocked (use_nuls ? '\0' : '\n');
Executed by:
  • readlink
153
167 free (value);-
168 }
executed 154 times by 1 test: end of block
Executed by:
  • readlink
154
169 else-
170 {-
171 status = EXIT_FAILURE;-
172 if (verbose)
verboseDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • readlink
FALSEevaluated 68 times by 1 test
Evaluated by:
  • readlink
2-68
173 error (0, errno, "%s", quotef (fname));
executed 2 times by 1 test: error (0, (*__errno_location ()) , "%s", quotearg_n_style_colon (0, shell_escape_quoting_style, fname));
Executed by:
  • readlink
2
174 }
executed 70 times by 1 test: end of block
Executed by:
  • readlink
70
175 }-
176-
177 return status;
executed 216 times by 1 test: return status;
Executed by:
  • readlink
216
178}-
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