1 /* Copyright (C) 1997-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 #include <bits/libc-lock.h>
25 #include <sys/syslog.h>
29 /* We have global data, protect the modification. */
30 __libc_lock_define_initialized (static, lock)
40 all_mask = label_mask | severity_mask | text_mask | action_mask | tag_mask
46 /* Adjust the size if new elements are added. */
56 #define NKEYWORDS (sizeof( keywords) / sizeof (keywords[0]))
63 struct severity_info *next;
67 /* List of known severities. */
68 static const struct severity_info nosev =
72 static const struct severity_info haltsev =
74 MM_HALT, "HALT", (struct severity_info *) &nosev
76 static const struct severity_info errorsev =
78 MM_ERROR, "ERROR", (struct severity_info *) &haltsev
80 static const struct severity_info warningsev =
82 MM_WARNING, "WARNING", (struct severity_info *) &errorsev
84 static const struct severity_info infosev =
86 MM_INFO, "INFO", (struct severity_info *) &warningsev
89 /* Start of the list. */
90 static struct severity_info *severity_list = (struct severity_info *) &infosev;
92 /* Mask of values we will print. */
95 /* Prototypes for local functions. */
96 static void init (void);
97 static int internal_addseverity (int severity, const char *string)
102 fmtmsg (long int classification, const char *label, int severity,
103 const char *text, const char *action, const char *tag)
105 __libc_once_define (static, once);
106 struct severity_info *severity_rec;
108 /* Make sure everything is initialized. */
109 __libc_once (once, init);
111 /* Start the real work. First check whether the input is ok. */
112 if (label != MM_NULLLBL)
114 /* Must be two fields, separated by a colon. */
115 const char *cp = strchr (label, ':');
119 /* The first field must not contain more than 10 bytes. */
121 /* The second field must not have more than 14 bytes. */
122 || strlen (cp + 1) > 14)
126 #ifdef __libc_ptf_call
127 /* We do not want this call to be cut short by a thread
128 cancellation. Therefore disable cancellation for now. */
129 int state = PTHREAD_CANCEL_ENABLE;
130 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
134 __libc_lock_lock (lock);
136 for (severity_rec = severity_list; severity_rec != NULL;
137 severity_rec = severity_rec->next)
138 if (severity == severity_rec->severity)
142 /* If we don't know anything about the severity level return an error. */
143 int result = MM_NOTOK;
144 if (severity_rec != NULL)
148 /* Now we can print. */
149 if (classification & MM_PRINT)
151 int do_label = (print & label_mask) && label != MM_NULLLBL;
152 int do_severity = (print & severity_mask) && severity != MM_NULLSEV;
153 int do_text = (print & text_mask) && text != MM_NULLTXT;
154 int do_action = (print & action_mask) && action != MM_NULLACT;
155 int do_tag = (print & tag_mask) && tag != MM_NULLTAG;
156 int need_colon = (do_label
157 && (do_severity | do_text | do_action | do_tag));
159 if (__fxprintf (stderr, "%s%s%s%s%s%s%s%s%s%s\n",
160 do_label ? label : "",
161 need_colon ? ": " : "",
162 do_severity ? severity_rec->string : "",
163 do_severity && (do_text | do_action | do_tag)
166 do_text && (do_action | do_tag) ? "\n" : "",
167 do_action ? "TO FIX: " : "",
168 do_action ? action : "",
169 do_action && do_tag ? " " : "",
170 do_tag ? tag : "") < 0)
171 /* Oh, oh. An error occurred during the output. */
175 if (classification & MM_CONSOLE)
177 int do_label = label != MM_NULLLBL;
178 int do_severity = severity != MM_NULLSEV;
179 int do_text = text != MM_NULLTXT;
180 int do_action = action != MM_NULLACT;
181 int do_tag = tag != MM_NULLTAG;
182 int need_colon = (do_label
183 && (do_severity | do_text | do_action | do_tag));
185 syslog (LOG_ERR, "%s%s%s%s%s%s%s%s%s%s\n",
186 do_label ? label : "",
187 need_colon ? ": " : "",
188 do_severity ? severity_rec->string : "",
189 do_severity && (do_text | do_action | do_tag) ? ": " : "",
191 do_text && (do_action | do_tag) ? "\n" : "",
192 do_action ? "TO FIX: " : "",
193 do_action ? action : "",
194 do_action && do_tag ? " " : "",
199 __libc_lock_unlock (lock);
201 #ifdef __libc_ptf_call
202 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
209 /* Initialize from environment variable content. */
213 const char *msgverb_var = getenv ("MSGVERB");
214 const char *sevlevel_var = getenv ("SEV_LEVEL");
216 if (msgverb_var != NULL && msgverb_var[0] != '\0')
218 /* Using this extra variable allows us to work without locking. */
223 for (cnt = 0; cnt < NKEYWORDS; ++cnt)
224 if (memcmp (msgverb_var,
225 keywords[cnt].name, keywords[cnt].len) == 0
226 && (msgverb_var[keywords[cnt].len] == ':'
227 || msgverb_var[keywords[cnt].len] == '\0'))
234 msgverb_var += keywords[cnt].len;
235 if (msgverb_var[0] == ':')
240 /* We found an illegal keyword in the environment
241 variable. The specifications say that we print all
247 while (msgverb_var[0] != '\0');
253 if (sevlevel_var != NULL)
255 __libc_lock_lock (lock);
257 while (sevlevel_var[0] != '\0')
259 const char *end = __strchrnul (sevlevel_var, ':');
262 /* First field: keyword. This is not used here but it must be
264 while (sevlevel_var < end)
265 if (*sevlevel_var++ == ',')
268 if (sevlevel_var < end)
270 /* Second field: severity level, a number. */
273 level = strtol (sevlevel_var, &cp, 0);
274 if (cp != sevlevel_var && cp < end && *cp++ == ','
277 const char *new_string;
279 new_string = __strndup (cp, end - cp);
281 if (new_string != NULL
282 && (internal_addseverity (level, new_string)
284 free ((char *) new_string);
288 sevlevel_var = end + (*end == ':' ? 1 : 0);
291 __libc_lock_unlock (lock);
296 /* Add the new entry to the list. */
299 internal_addseverity (int severity, const char *string)
301 struct severity_info *runp, *lastp;
304 /* First see if there is already a record for the severity level. */
305 for (runp = severity_list, lastp = NULL; runp != NULL; runp = runp->next)
306 if (runp->severity == severity)
314 /* Change the string. */
315 runp->string = string;
318 /* Remove the severity class. */
320 severity_list = runp->next;
322 lastp->next = runp->next;
327 else if (string != NULL)
329 runp = malloc (sizeof (*runp));
334 runp->severity = severity;
335 runp->next = severity_list;
336 runp->string = string;
337 severity_list = runp;
341 /* We tried to remove a non-existing severity class. */
348 /* Add new severity level or remove old one. */
350 addseverity (int severity, const char *string)
354 /* Prevent illegal SEVERITY values. */
355 if (severity <= MM_INFO)
358 /* Protect the global data. */
359 __libc_lock_lock (lock);
361 /* Do the real work. */
362 result = internal_addseverity (severity, string);
364 /* Release the lock. */
365 __libc_lock_unlock (lock);
371 libc_freeres_fn (free_mem)
373 struct severity_info *runp = severity_list;
376 if (runp->severity > MM_INFO)
378 /* This is data we have to release. */
379 struct severity_info *here = runp;