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7c673cae FG |
1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright (c) Intel Corporation. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
33 | ||
11fdf7f2 | 34 | #include "spdk/stdinc.h" |
7c673cae | 35 | |
11fdf7f2 | 36 | #include "spdk_internal/log.h" |
7c673cae | 37 | |
11fdf7f2 TL |
38 | #ifdef SPDK_LOG_BACKTRACE_LVL |
39 | #define UNW_LOCAL_ONLY | |
40 | #include <libunwind.h> | |
7c673cae | 41 | #endif |
7c673cae | 42 | |
11fdf7f2 TL |
43 | static const char *const spdk_level_names[] = { |
44 | [SPDK_LOG_ERROR] = "ERROR", | |
45 | [SPDK_LOG_WARN] = "WARNING", | |
46 | [SPDK_LOG_NOTICE] = "NOTICE", | |
47 | [SPDK_LOG_INFO] = "INFO", | |
48 | [SPDK_LOG_DEBUG] = "DEBUG", | |
7c673cae FG |
49 | }; |
50 | ||
11fdf7f2 | 51 | #define MAX_TMPBUF 1024 |
7c673cae | 52 | |
11fdf7f2 TL |
53 | void |
54 | spdk_log_open(void) | |
7c673cae | 55 | { |
11fdf7f2 | 56 | openlog("spdk", LOG_PID, LOG_LOCAL7); |
7c673cae FG |
57 | } |
58 | ||
59 | void | |
11fdf7f2 | 60 | spdk_log_close(void) |
7c673cae | 61 | { |
11fdf7f2 TL |
62 | closelog(); |
63 | } | |
7c673cae | 64 | |
11fdf7f2 TL |
65 | #ifdef SPDK_LOG_BACKTRACE_LVL |
66 | static void | |
67 | spdk_log_unwind_stack(FILE *fp, enum spdk_log_level level) | |
68 | { | |
69 | unw_error_t err; | |
70 | unw_cursor_t cursor; | |
71 | unw_context_t uc; | |
72 | unw_word_t ip; | |
73 | unw_word_t offp; | |
74 | char f_name[64]; | |
75 | int frame; | |
76 | ||
77 | if (level > g_spdk_log_backtrace_level) { | |
78 | return; | |
79 | } | |
80 | ||
81 | unw_getcontext(&uc); | |
82 | unw_init_local(&cursor, &uc); | |
83 | fprintf(fp, "*%s*: === BACKTRACE START ===\n", spdk_level_names[level]); | |
84 | ||
85 | unw_step(&cursor); | |
86 | for (frame = 1; unw_step(&cursor) > 0; frame++) { | |
87 | unw_get_reg(&cursor, UNW_REG_IP, &ip); | |
88 | err = unw_get_proc_name(&cursor, f_name, sizeof(f_name), &offp); | |
89 | if (err || strcmp(f_name, "main") == 0) { | |
90 | break; | |
7c673cae | 91 | } |
11fdf7f2 TL |
92 | |
93 | fprintf(fp, "*%s*: %3d: %*s%s() at %#lx\n", spdk_level_names[level], frame, frame - 1, "", f_name, | |
94 | (unsigned long)ip); | |
7c673cae | 95 | } |
11fdf7f2 | 96 | fprintf(fp, "*%s*: === BACKTRACE END ===\n", spdk_level_names[level]); |
7c673cae FG |
97 | } |
98 | ||
11fdf7f2 TL |
99 | #else |
100 | #define spdk_log_unwind_stack(fp, lvl) | |
101 | #endif | |
102 | ||
7c673cae | 103 | void |
11fdf7f2 TL |
104 | spdk_log(enum spdk_log_level level, const char *file, const int line, const char *func, |
105 | const char *format, ...) | |
7c673cae | 106 | { |
11fdf7f2 | 107 | int severity = LOG_INFO; |
7c673cae FG |
108 | char buf[MAX_TMPBUF]; |
109 | va_list ap; | |
110 | ||
11fdf7f2 TL |
111 | switch (level) { |
112 | case SPDK_LOG_ERROR: | |
113 | severity = LOG_ERR; | |
114 | break; | |
115 | case SPDK_LOG_WARN: | |
116 | severity = LOG_WARNING; | |
117 | break; | |
118 | case SPDK_LOG_NOTICE: | |
119 | severity = LOG_NOTICE; | |
120 | break; | |
121 | case SPDK_LOG_INFO: | |
122 | case SPDK_LOG_DEBUG: | |
123 | severity = LOG_INFO; | |
124 | break; | |
125 | case SPDK_LOG_DISABLED: | |
126 | return; | |
7c673cae FG |
127 | } |
128 | ||
11fdf7f2 | 129 | va_start(ap, format); |
7c673cae | 130 | |
11fdf7f2 | 131 | vsnprintf(buf, sizeof(buf), format, ap); |
7c673cae | 132 | |
11fdf7f2 TL |
133 | if (level <= g_spdk_log_print_level) { |
134 | fprintf(stderr, "%s:%4d:%s: *%s*: %s", file, line, func, spdk_level_names[level], buf); | |
135 | spdk_log_unwind_stack(stderr, level); | |
7c673cae | 136 | } |
7c673cae | 137 | |
11fdf7f2 TL |
138 | if (level <= g_spdk_log_level) { |
139 | syslog(severity, "%s:%4d:%s: *%s*: %s", file, line, func, spdk_level_names[level], buf); | |
7c673cae | 140 | } |
11fdf7f2 | 141 | |
7c673cae FG |
142 | va_end(ap); |
143 | } | |
144 | ||
145 | static void | |
146 | fdump(FILE *fp, const char *label, const uint8_t *buf, size_t len) | |
147 | { | |
148 | char tmpbuf[MAX_TMPBUF]; | |
149 | char buf16[16 + 1]; | |
150 | size_t total; | |
151 | unsigned int idx; | |
152 | ||
153 | fprintf(fp, "%s\n", label); | |
154 | ||
155 | memset(buf16, 0, sizeof buf16); | |
156 | total = 0; | |
157 | for (idx = 0; idx < len; idx++) { | |
158 | if (idx != 0 && idx % 16 == 0) { | |
159 | snprintf(tmpbuf + total, sizeof tmpbuf - total, | |
160 | " %s", buf16); | |
161 | fprintf(fp, "%s\n", tmpbuf); | |
162 | total = 0; | |
163 | } | |
164 | if (idx % 16 == 0) { | |
165 | total += snprintf(tmpbuf + total, sizeof tmpbuf - total, | |
166 | "%08x ", idx); | |
167 | } | |
168 | if (idx % 8 == 0) { | |
169 | total += snprintf(tmpbuf + total, sizeof tmpbuf - total, | |
170 | "%s", " "); | |
171 | } | |
172 | total += snprintf(tmpbuf + total, sizeof tmpbuf - total, | |
173 | "%2.2x ", buf[idx] & 0xff); | |
174 | buf16[idx % 16] = isprint(buf[idx]) ? buf[idx] : '.'; | |
175 | } | |
176 | for (; idx % 16 != 0; idx++) { | |
9f95a23c TL |
177 | if (idx == 8) { |
178 | total += snprintf(tmpbuf + total, sizeof tmpbuf - total, | |
179 | " "); | |
180 | } | |
181 | ||
7c673cae FG |
182 | total += snprintf(tmpbuf + total, sizeof tmpbuf - total, " "); |
183 | buf16[idx % 16] = ' '; | |
184 | } | |
185 | snprintf(tmpbuf + total, sizeof tmpbuf - total, " %s", buf16); | |
186 | fprintf(fp, "%s\n", tmpbuf); | |
187 | fflush(fp); | |
188 | } | |
189 | ||
190 | void | |
9f95a23c | 191 | spdk_log_dump(FILE *fp, const char *label, const void *buf, size_t len) |
7c673cae | 192 | { |
11fdf7f2 | 193 | fdump(fp, label, buf, len); |
7c673cae | 194 | } |