Annotation of src/usr.bin/rsync/log.c, Revision 1.7
1.7 ! benno 1: /* $Id: log.c,v 1.6 2019/02/18 22:47:34 benno Exp $ */
1.1 benno 2: /*
3: * Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #include <errno.h>
18: #include <stdarg.h>
19: #include <stdint.h>
20: #include <stdio.h>
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "extern.h"
25:
1.7 ! benno 26: extern int verbose;
! 27:
1.1 benno 28: /*
29: * Log a message at level "level", starting at zero, which corresponds
30: * to the current verbosity level opts->verbose (whose verbosity starts
31: * at one).
32: */
33: void
1.7 ! benno 34: rsync_log(const char *fname, size_t line, int level, const char *fmt, ...)
1.1 benno 35: {
36: char *buf = NULL;
37: va_list ap;
38:
1.7 ! benno 39: if (verbose < level + 1)
1.1 benno 40: return;
41:
1.3 deraadt 42: if (fmt != NULL) {
1.1 benno 43: va_start(ap, fmt);
44: if (vasprintf(&buf, fmt, ap) < 0) {
45: va_end(ap);
46: return;
47: }
48: va_end(ap);
49: }
50:
1.3 deraadt 51: if (level <= 0 && buf != NULL)
1.1 benno 52: fprintf(stderr, "%s\n", buf);
53: else if (level > 0)
54: fprintf(stderr, "%s:%zu%s%s\n", fname, line,
1.3 deraadt 55: (buf != NULL) ? ": " : "",
56: (buf != NULL) ? buf : "");
1.1 benno 57: free(buf);
58: }
59:
60: /*
61: * This reports an error---not a warning.
62: * However, it is not like errx(3) in that it does not exit.
63: */
64: void
1.7 ! benno 65: rsync_errx(const char *fname, size_t line, const char *fmt, ...)
1.1 benno 66: {
67: char *buf = NULL;
68: va_list ap;
69:
1.3 deraadt 70: if (fmt != NULL) {
1.1 benno 71: va_start(ap, fmt);
72: if (vasprintf(&buf, fmt, ap) < 0) {
73: va_end(ap);
74: return;
75: }
76: va_end(ap);
77: }
78:
79: fprintf(stderr, "%s:%zu: error%s%s\n", fname, line,
1.6 benno 80: (buf != NULL) ? ": " : "",
81: (buf != NULL) ? buf : "");
1.1 benno 82: free(buf);
83: }
84:
85: /*
86: * This reports an error---not a warning.
87: * However, it is not like err(3) in that it does not exit.
88: */
89: void
1.7 ! benno 90: rsync_err(const char *fname, size_t line, const char *fmt, ...)
1.1 benno 91: {
92: char *buf = NULL;
93: va_list ap;
94: int er = errno;
95:
1.3 deraadt 96: if (fmt != NULL) {
1.1 benno 97: va_start(ap, fmt);
98: if (vasprintf(&buf, fmt, ap) < 0) {
99: va_end(ap);
100: return;
101: }
102: va_end(ap);
103: }
104:
105: fprintf(stderr, "%s:%zu: error%s%s: %s\n", fname, line,
1.6 benno 106: (buf != NULL) ? ": " : "",
107: (buf != NULL) ? buf : "", strerror(er));
1.1 benno 108: free(buf);
109: }
110:
111: /*
112: * Prints a non-terminal error message, that is, when reporting on the
113: * chain of functions from which the actual warning occurred.
114: */
115: void
1.7 ! benno 116: rsync_errx1(const char *fname, size_t line, const char *fmt, ...)
1.1 benno 117: {
118: char *buf = NULL;
119: va_list ap;
120:
1.7 ! benno 121: if (verbose < 1)
1.1 benno 122: return;
123:
1.3 deraadt 124: if (fmt != NULL) {
1.1 benno 125: va_start(ap, fmt);
126: if (vasprintf(&buf, fmt, ap) < 0) {
127: va_end(ap);
128: return;
129: }
130: va_end(ap);
131: }
132:
133: fprintf(stderr, "%s:%zu: error%s%s\n", fname, line,
1.6 benno 134: (buf != NULL) ? ": " : "",
135: (buf != NULL) ? buf : "");
1.1 benno 136: free(buf);
137: }
138:
139: /*
140: * Prints a warning message.
141: */
142: void
1.7 ! benno 143: rsync_warnx(const char *fname, size_t line, const char *fmt, ...)
1.1 benno 144: {
145: char *buf = NULL;
146: va_list ap;
147:
1.3 deraadt 148: if (fmt != NULL) {
1.1 benno 149: va_start(ap, fmt);
150: if (vasprintf(&buf, fmt, ap) < 0) {
151: va_end(ap);
152: return;
153: }
154: va_end(ap);
155: }
156:
157: fprintf(stderr, "%s:%zu: warning%s%s\n", fname, line,
1.6 benno 158: (buf != NULL) ? ": " : "",
159: (buf != NULL) ? buf : "");
1.1 benno 160: free(buf);
161: }
162:
163: /*
164: * Prints a warning with an errno.
165: * It uses a level detector for when to inhibit printing.
166: */
167: void
1.7 ! benno 168: rsync_warn(int level, const char *fname, size_t line, const char *fmt, ...)
1.1 benno 169: {
170: char *buf = NULL;
171: va_list ap;
172: int er = errno;
173:
1.7 ! benno 174: if (verbose < level)
1.1 benno 175: return;
176:
1.3 deraadt 177: if (fmt != NULL) {
1.1 benno 178: va_start(ap, fmt);
179: if (vasprintf(&buf, fmt, ap) < 0) {
180: va_end(ap);
181: return;
182: }
183: va_end(ap);
184: }
185:
186: fprintf(stderr, "%s:%zu: warning%s%s: %s\n", fname, line,
1.6 benno 187: (buf != NULL) ? ": " : "",
188: (buf != NULL) ? buf : "", strerror(er));
1.1 benno 189: free(buf);
190: }
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