1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate ** Copyright (c) 1999-2002 Sendmail, Inc. and its suppliers.
3*7c478bd9Sstevel@tonic-gate ** All rights reserved.
4*7c478bd9Sstevel@tonic-gate **
5*7c478bd9Sstevel@tonic-gate ** By using this file, you agree to the terms and conditions set
6*7c478bd9Sstevel@tonic-gate ** forth in the LICENSE file which can be found at the top level of
7*7c478bd9Sstevel@tonic-gate ** the sendmail distribution.
8*7c478bd9Sstevel@tonic-gate */
9*7c478bd9Sstevel@tonic-gate
10*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
11*7c478bd9Sstevel@tonic-gate
12*7c478bd9Sstevel@tonic-gate #include <sm/gen.h>
13*7c478bd9Sstevel@tonic-gate SM_RCSID("@(#)$Id: smdb.c,v 8.58 2004/08/03 20:58:38 ca Exp $")
14*7c478bd9Sstevel@tonic-gate
15*7c478bd9Sstevel@tonic-gate #include <fcntl.h>
16*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
17*7c478bd9Sstevel@tonic-gate #include <unistd.h>
18*7c478bd9Sstevel@tonic-gate
19*7c478bd9Sstevel@tonic-gate
20*7c478bd9Sstevel@tonic-gate #include <sendmail/sendmail.h>
21*7c478bd9Sstevel@tonic-gate #include <libsmdb/smdb.h>
22*7c478bd9Sstevel@tonic-gate
23*7c478bd9Sstevel@tonic-gate static bool smdb_lockfile __P((int, int));
24*7c478bd9Sstevel@tonic-gate
25*7c478bd9Sstevel@tonic-gate /*
26*7c478bd9Sstevel@tonic-gate ** SMDB_MALLOC_DATABASE -- Allocates a database structure.
27*7c478bd9Sstevel@tonic-gate **
28*7c478bd9Sstevel@tonic-gate ** Parameters:
29*7c478bd9Sstevel@tonic-gate ** None
30*7c478bd9Sstevel@tonic-gate **
31*7c478bd9Sstevel@tonic-gate ** Returns:
32*7c478bd9Sstevel@tonic-gate ** An pointer to an allocated SMDB_DATABASE structure or
33*7c478bd9Sstevel@tonic-gate ** NULL if it couldn't allocate the memory.
34*7c478bd9Sstevel@tonic-gate */
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate SMDB_DATABASE *
smdb_malloc_database()37*7c478bd9Sstevel@tonic-gate smdb_malloc_database()
38*7c478bd9Sstevel@tonic-gate {
39*7c478bd9Sstevel@tonic-gate SMDB_DATABASE *db;
40*7c478bd9Sstevel@tonic-gate
41*7c478bd9Sstevel@tonic-gate db = (SMDB_DATABASE *) malloc(sizeof(SMDB_DATABASE));
42*7c478bd9Sstevel@tonic-gate
43*7c478bd9Sstevel@tonic-gate if (db != NULL)
44*7c478bd9Sstevel@tonic-gate (void) memset(db, '\0', sizeof(SMDB_DATABASE));
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate return db;
47*7c478bd9Sstevel@tonic-gate }
48*7c478bd9Sstevel@tonic-gate
49*7c478bd9Sstevel@tonic-gate
50*7c478bd9Sstevel@tonic-gate /*
51*7c478bd9Sstevel@tonic-gate ** SMDB_FREE_DATABASE -- Unallocates a database structure.
52*7c478bd9Sstevel@tonic-gate **
53*7c478bd9Sstevel@tonic-gate ** Parameters:
54*7c478bd9Sstevel@tonic-gate ** database -- a SMDB_DATABASE pointer to deallocate.
55*7c478bd9Sstevel@tonic-gate **
56*7c478bd9Sstevel@tonic-gate ** Returns:
57*7c478bd9Sstevel@tonic-gate ** None
58*7c478bd9Sstevel@tonic-gate */
59*7c478bd9Sstevel@tonic-gate
60*7c478bd9Sstevel@tonic-gate void
smdb_free_database(database)61*7c478bd9Sstevel@tonic-gate smdb_free_database(database)
62*7c478bd9Sstevel@tonic-gate SMDB_DATABASE *database;
63*7c478bd9Sstevel@tonic-gate {
64*7c478bd9Sstevel@tonic-gate if (database != NULL)
65*7c478bd9Sstevel@tonic-gate free(database);
66*7c478bd9Sstevel@tonic-gate }
67*7c478bd9Sstevel@tonic-gate /*
68*7c478bd9Sstevel@tonic-gate ** SMDB_LOCKFILE -- lock a file using flock or (shudder) fcntl locking
69*7c478bd9Sstevel@tonic-gate **
70*7c478bd9Sstevel@tonic-gate ** Parameters:
71*7c478bd9Sstevel@tonic-gate ** fd -- the file descriptor of the file.
72*7c478bd9Sstevel@tonic-gate ** type -- type of the lock. Bits can be:
73*7c478bd9Sstevel@tonic-gate ** LOCK_EX -- exclusive lock.
74*7c478bd9Sstevel@tonic-gate ** LOCK_NB -- non-blocking.
75*7c478bd9Sstevel@tonic-gate **
76*7c478bd9Sstevel@tonic-gate ** Returns:
77*7c478bd9Sstevel@tonic-gate ** true if the lock was acquired.
78*7c478bd9Sstevel@tonic-gate ** false otherwise.
79*7c478bd9Sstevel@tonic-gate */
80*7c478bd9Sstevel@tonic-gate
81*7c478bd9Sstevel@tonic-gate static bool
smdb_lockfile(fd,type)82*7c478bd9Sstevel@tonic-gate smdb_lockfile(fd, type)
83*7c478bd9Sstevel@tonic-gate int fd;
84*7c478bd9Sstevel@tonic-gate int type;
85*7c478bd9Sstevel@tonic-gate {
86*7c478bd9Sstevel@tonic-gate int i;
87*7c478bd9Sstevel@tonic-gate int save_errno;
88*7c478bd9Sstevel@tonic-gate #if !HASFLOCK
89*7c478bd9Sstevel@tonic-gate int action;
90*7c478bd9Sstevel@tonic-gate struct flock lfd;
91*7c478bd9Sstevel@tonic-gate
92*7c478bd9Sstevel@tonic-gate (void) memset(&lfd, '\0', sizeof lfd);
93*7c478bd9Sstevel@tonic-gate if (bitset(LOCK_UN, type))
94*7c478bd9Sstevel@tonic-gate lfd.l_type = F_UNLCK;
95*7c478bd9Sstevel@tonic-gate else if (bitset(LOCK_EX, type))
96*7c478bd9Sstevel@tonic-gate lfd.l_type = F_WRLCK;
97*7c478bd9Sstevel@tonic-gate else
98*7c478bd9Sstevel@tonic-gate lfd.l_type = F_RDLCK;
99*7c478bd9Sstevel@tonic-gate
100*7c478bd9Sstevel@tonic-gate if (bitset(LOCK_NB, type))
101*7c478bd9Sstevel@tonic-gate action = F_SETLK;
102*7c478bd9Sstevel@tonic-gate else
103*7c478bd9Sstevel@tonic-gate action = F_SETLKW;
104*7c478bd9Sstevel@tonic-gate
105*7c478bd9Sstevel@tonic-gate while ((i = fcntl(fd, action, &lfd)) < 0 && errno == EINTR)
106*7c478bd9Sstevel@tonic-gate continue;
107*7c478bd9Sstevel@tonic-gate if (i >= 0)
108*7c478bd9Sstevel@tonic-gate return true;
109*7c478bd9Sstevel@tonic-gate save_errno = errno;
110*7c478bd9Sstevel@tonic-gate
111*7c478bd9Sstevel@tonic-gate /*
112*7c478bd9Sstevel@tonic-gate ** On SunOS, if you are testing using -oQ/tmp/mqueue or
113*7c478bd9Sstevel@tonic-gate ** -oA/tmp/aliases or anything like that, and /tmp is mounted
114*7c478bd9Sstevel@tonic-gate ** as type "tmp" (that is, served from swap space), the
115*7c478bd9Sstevel@tonic-gate ** previous fcntl will fail with "Invalid argument" errors.
116*7c478bd9Sstevel@tonic-gate ** Since this is fairly common during testing, we will assume
117*7c478bd9Sstevel@tonic-gate ** that this indicates that the lock is successfully grabbed.
118*7c478bd9Sstevel@tonic-gate */
119*7c478bd9Sstevel@tonic-gate
120*7c478bd9Sstevel@tonic-gate if (save_errno == EINVAL)
121*7c478bd9Sstevel@tonic-gate return true;
122*7c478bd9Sstevel@tonic-gate
123*7c478bd9Sstevel@tonic-gate if (!bitset(LOCK_NB, type) ||
124*7c478bd9Sstevel@tonic-gate (save_errno != EACCES && save_errno != EAGAIN))
125*7c478bd9Sstevel@tonic-gate {
126*7c478bd9Sstevel@tonic-gate # if 0
127*7c478bd9Sstevel@tonic-gate int omode = fcntl(fd, F_GETFL, NULL);
128*7c478bd9Sstevel@tonic-gate int euid = (int) geteuid();
129*7c478bd9Sstevel@tonic-gate
130*7c478bd9Sstevel@tonic-gate syslog(LOG_ERR, "cannot lockf(%s%s, fd=%d, type=%o, omode=%o, euid=%d)",
131*7c478bd9Sstevel@tonic-gate filename, ext, fd, type, omode, euid);
132*7c478bd9Sstevel@tonic-gate # endif /* 0 */
133*7c478bd9Sstevel@tonic-gate errno = save_errno;
134*7c478bd9Sstevel@tonic-gate return false;
135*7c478bd9Sstevel@tonic-gate }
136*7c478bd9Sstevel@tonic-gate #else /* !HASFLOCK */
137*7c478bd9Sstevel@tonic-gate
138*7c478bd9Sstevel@tonic-gate while ((i = flock(fd, type)) < 0 && errno == EINTR)
139*7c478bd9Sstevel@tonic-gate continue;
140*7c478bd9Sstevel@tonic-gate if (i >= 0)
141*7c478bd9Sstevel@tonic-gate return true;
142*7c478bd9Sstevel@tonic-gate save_errno = errno;
143*7c478bd9Sstevel@tonic-gate
144*7c478bd9Sstevel@tonic-gate if (!bitset(LOCK_NB, type) || save_errno != EWOULDBLOCK)
145*7c478bd9Sstevel@tonic-gate {
146*7c478bd9Sstevel@tonic-gate # if 0
147*7c478bd9Sstevel@tonic-gate int omode = fcntl(fd, F_GETFL, NULL);
148*7c478bd9Sstevel@tonic-gate int euid = (int) geteuid();
149*7c478bd9Sstevel@tonic-gate
150*7c478bd9Sstevel@tonic-gate syslog(LOG_ERR, "cannot flock(%s%s, fd=%d, type=%o, omode=%o, euid=%d)",
151*7c478bd9Sstevel@tonic-gate filename, ext, fd, type, omode, euid);
152*7c478bd9Sstevel@tonic-gate # endif /* 0 */
153*7c478bd9Sstevel@tonic-gate errno = save_errno;
154*7c478bd9Sstevel@tonic-gate return false;
155*7c478bd9Sstevel@tonic-gate }
156*7c478bd9Sstevel@tonic-gate #endif /* !HASFLOCK */
157*7c478bd9Sstevel@tonic-gate errno = save_errno;
158*7c478bd9Sstevel@tonic-gate return false;
159*7c478bd9Sstevel@tonic-gate }
160*7c478bd9Sstevel@tonic-gate /*
161*7c478bd9Sstevel@tonic-gate ** SMDB_OPEN_DATABASE -- Opens a database.
162*7c478bd9Sstevel@tonic-gate **
163*7c478bd9Sstevel@tonic-gate ** This opens a database. If type is SMDB_DEFAULT it tries to
164*7c478bd9Sstevel@tonic-gate ** use a DB1 or DB2 hash. If that isn't available, it will try
165*7c478bd9Sstevel@tonic-gate ** to use NDBM. If a specific type is given it will try to open
166*7c478bd9Sstevel@tonic-gate ** a database of that type.
167*7c478bd9Sstevel@tonic-gate **
168*7c478bd9Sstevel@tonic-gate ** Parameters:
169*7c478bd9Sstevel@tonic-gate ** database -- An pointer to a SMDB_DATABASE pointer where the
170*7c478bd9Sstevel@tonic-gate ** opened database will be stored. This should
171*7c478bd9Sstevel@tonic-gate ** be unallocated.
172*7c478bd9Sstevel@tonic-gate ** db_name -- The name of the database to open. Do not include
173*7c478bd9Sstevel@tonic-gate ** the file name extension.
174*7c478bd9Sstevel@tonic-gate ** mode -- The mode to set on the database file or files.
175*7c478bd9Sstevel@tonic-gate ** mode_mask -- Mode bits that must match on an opened database.
176*7c478bd9Sstevel@tonic-gate ** sff -- Flags to safefile.
177*7c478bd9Sstevel@tonic-gate ** type -- The type of database to open. Supported types
178*7c478bd9Sstevel@tonic-gate ** vary depending on what was compiled in.
179*7c478bd9Sstevel@tonic-gate ** user_info -- Information on the user to use for file
180*7c478bd9Sstevel@tonic-gate ** permissions.
181*7c478bd9Sstevel@tonic-gate ** params -- Params specific to the database being opened.
182*7c478bd9Sstevel@tonic-gate ** Only supports some DB hash options right now
183*7c478bd9Sstevel@tonic-gate ** (see smdb_db_open() for details).
184*7c478bd9Sstevel@tonic-gate **
185*7c478bd9Sstevel@tonic-gate ** Returns:
186*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success.
187*7c478bd9Sstevel@tonic-gate ** Anything else is an error. Look up more info about the
188*7c478bd9Sstevel@tonic-gate ** error in the comments for the specific open() used.
189*7c478bd9Sstevel@tonic-gate */
190*7c478bd9Sstevel@tonic-gate
191*7c478bd9Sstevel@tonic-gate int
smdb_open_database(database,db_name,mode,mode_mask,sff,type,user_info,params)192*7c478bd9Sstevel@tonic-gate smdb_open_database(database, db_name, mode, mode_mask, sff, type, user_info,
193*7c478bd9Sstevel@tonic-gate params)
194*7c478bd9Sstevel@tonic-gate SMDB_DATABASE **database;
195*7c478bd9Sstevel@tonic-gate char *db_name;
196*7c478bd9Sstevel@tonic-gate int mode;
197*7c478bd9Sstevel@tonic-gate int mode_mask;
198*7c478bd9Sstevel@tonic-gate long sff;
199*7c478bd9Sstevel@tonic-gate SMDB_DBTYPE type;
200*7c478bd9Sstevel@tonic-gate SMDB_USER_INFO *user_info;
201*7c478bd9Sstevel@tonic-gate SMDB_DBPARAMS *params;
202*7c478bd9Sstevel@tonic-gate {
203*7c478bd9Sstevel@tonic-gate bool type_was_default = false;
204*7c478bd9Sstevel@tonic-gate
205*7c478bd9Sstevel@tonic-gate if (type == SMDB_TYPE_DEFAULT)
206*7c478bd9Sstevel@tonic-gate {
207*7c478bd9Sstevel@tonic-gate type_was_default = true;
208*7c478bd9Sstevel@tonic-gate #ifdef NEWDB
209*7c478bd9Sstevel@tonic-gate type = SMDB_TYPE_HASH;
210*7c478bd9Sstevel@tonic-gate #else /* NEWDB */
211*7c478bd9Sstevel@tonic-gate # ifdef NDBM
212*7c478bd9Sstevel@tonic-gate type = SMDB_TYPE_NDBM;
213*7c478bd9Sstevel@tonic-gate # endif /* NDBM */
214*7c478bd9Sstevel@tonic-gate #endif /* NEWDB */
215*7c478bd9Sstevel@tonic-gate }
216*7c478bd9Sstevel@tonic-gate
217*7c478bd9Sstevel@tonic-gate if (type == SMDB_TYPE_DEFAULT)
218*7c478bd9Sstevel@tonic-gate return SMDBE_UNKNOWN_DB_TYPE;
219*7c478bd9Sstevel@tonic-gate
220*7c478bd9Sstevel@tonic-gate if ((strncmp(type, SMDB_TYPE_HASH, SMDB_TYPE_HASH_LEN) == 0) ||
221*7c478bd9Sstevel@tonic-gate (strncmp(type, SMDB_TYPE_BTREE, SMDB_TYPE_BTREE_LEN) == 0))
222*7c478bd9Sstevel@tonic-gate {
223*7c478bd9Sstevel@tonic-gate #ifdef NEWDB
224*7c478bd9Sstevel@tonic-gate int result;
225*7c478bd9Sstevel@tonic-gate
226*7c478bd9Sstevel@tonic-gate result = smdb_db_open(database, db_name, mode, mode_mask, sff,
227*7c478bd9Sstevel@tonic-gate type, user_info, params);
228*7c478bd9Sstevel@tonic-gate # ifdef NDBM
229*7c478bd9Sstevel@tonic-gate if (result == ENOENT && type_was_default)
230*7c478bd9Sstevel@tonic-gate type = SMDB_TYPE_NDBM;
231*7c478bd9Sstevel@tonic-gate else
232*7c478bd9Sstevel@tonic-gate # endif /* NDBM */
233*7c478bd9Sstevel@tonic-gate return result;
234*7c478bd9Sstevel@tonic-gate #else /* NEWDB */
235*7c478bd9Sstevel@tonic-gate return SMDBE_UNSUPPORTED_DB_TYPE;
236*7c478bd9Sstevel@tonic-gate #endif /* NEWDB */
237*7c478bd9Sstevel@tonic-gate }
238*7c478bd9Sstevel@tonic-gate
239*7c478bd9Sstevel@tonic-gate if (strncmp(type, SMDB_TYPE_NDBM, SMDB_TYPE_NDBM_LEN) == 0)
240*7c478bd9Sstevel@tonic-gate {
241*7c478bd9Sstevel@tonic-gate #ifdef NDBM
242*7c478bd9Sstevel@tonic-gate int result;
243*7c478bd9Sstevel@tonic-gate
244*7c478bd9Sstevel@tonic-gate result = smdb_ndbm_open(database, db_name, mode, mode_mask,
245*7c478bd9Sstevel@tonic-gate sff, type, user_info, params);
246*7c478bd9Sstevel@tonic-gate return result;
247*7c478bd9Sstevel@tonic-gate #else /* NDBM */
248*7c478bd9Sstevel@tonic-gate return SMDBE_UNSUPPORTED_DB_TYPE;
249*7c478bd9Sstevel@tonic-gate #endif /* NDBM */
250*7c478bd9Sstevel@tonic-gate }
251*7c478bd9Sstevel@tonic-gate
252*7c478bd9Sstevel@tonic-gate return SMDBE_UNKNOWN_DB_TYPE;
253*7c478bd9Sstevel@tonic-gate }
254*7c478bd9Sstevel@tonic-gate /*
255*7c478bd9Sstevel@tonic-gate ** SMDB_ADD_EXTENSION -- Adds an extension to a file name.
256*7c478bd9Sstevel@tonic-gate **
257*7c478bd9Sstevel@tonic-gate ** Just adds a . followed by a string to a db_name if there
258*7c478bd9Sstevel@tonic-gate ** is room and the db_name does not already have that extension.
259*7c478bd9Sstevel@tonic-gate **
260*7c478bd9Sstevel@tonic-gate ** Parameters:
261*7c478bd9Sstevel@tonic-gate ** full_name -- The final file name.
262*7c478bd9Sstevel@tonic-gate ** max_full_name_len -- The max length for full_name.
263*7c478bd9Sstevel@tonic-gate ** db_name -- The name of the db.
264*7c478bd9Sstevel@tonic-gate ** extension -- The extension to add.
265*7c478bd9Sstevel@tonic-gate **
266*7c478bd9Sstevel@tonic-gate ** Returns:
267*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success.
268*7c478bd9Sstevel@tonic-gate ** Anything else is an error. Look up more info about the
269*7c478bd9Sstevel@tonic-gate ** error in the comments for the specific open() used.
270*7c478bd9Sstevel@tonic-gate */
271*7c478bd9Sstevel@tonic-gate
272*7c478bd9Sstevel@tonic-gate int
smdb_add_extension(full_name,max_full_name_len,db_name,extension)273*7c478bd9Sstevel@tonic-gate smdb_add_extension(full_name, max_full_name_len, db_name, extension)
274*7c478bd9Sstevel@tonic-gate char *full_name;
275*7c478bd9Sstevel@tonic-gate int max_full_name_len;
276*7c478bd9Sstevel@tonic-gate char *db_name;
277*7c478bd9Sstevel@tonic-gate char *extension;
278*7c478bd9Sstevel@tonic-gate {
279*7c478bd9Sstevel@tonic-gate int extension_len;
280*7c478bd9Sstevel@tonic-gate int db_name_len;
281*7c478bd9Sstevel@tonic-gate
282*7c478bd9Sstevel@tonic-gate if (full_name == NULL || db_name == NULL || extension == NULL)
283*7c478bd9Sstevel@tonic-gate return SMDBE_INVALID_PARAMETER;
284*7c478bd9Sstevel@tonic-gate
285*7c478bd9Sstevel@tonic-gate extension_len = strlen(extension);
286*7c478bd9Sstevel@tonic-gate db_name_len = strlen(db_name);
287*7c478bd9Sstevel@tonic-gate
288*7c478bd9Sstevel@tonic-gate if (extension_len + db_name_len + 2 > max_full_name_len)
289*7c478bd9Sstevel@tonic-gate return SMDBE_DB_NAME_TOO_LONG;
290*7c478bd9Sstevel@tonic-gate
291*7c478bd9Sstevel@tonic-gate if (db_name_len < extension_len + 1 ||
292*7c478bd9Sstevel@tonic-gate db_name[db_name_len - extension_len - 1] != '.' ||
293*7c478bd9Sstevel@tonic-gate strcmp(&db_name[db_name_len - extension_len], extension) != 0)
294*7c478bd9Sstevel@tonic-gate (void) sm_snprintf(full_name, max_full_name_len, "%s.%s",
295*7c478bd9Sstevel@tonic-gate db_name, extension);
296*7c478bd9Sstevel@tonic-gate else
297*7c478bd9Sstevel@tonic-gate (void) sm_strlcpy(full_name, db_name, max_full_name_len);
298*7c478bd9Sstevel@tonic-gate
299*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
300*7c478bd9Sstevel@tonic-gate }
301*7c478bd9Sstevel@tonic-gate /*
302*7c478bd9Sstevel@tonic-gate ** SMDB_LOCK_FILE -- Locks the database file.
303*7c478bd9Sstevel@tonic-gate **
304*7c478bd9Sstevel@tonic-gate ** Locks the actual database file.
305*7c478bd9Sstevel@tonic-gate **
306*7c478bd9Sstevel@tonic-gate ** Parameters:
307*7c478bd9Sstevel@tonic-gate ** lock_fd -- The resulting descriptor for the locked file.
308*7c478bd9Sstevel@tonic-gate ** db_name -- The name of the database without extension.
309*7c478bd9Sstevel@tonic-gate ** mode -- The open mode.
310*7c478bd9Sstevel@tonic-gate ** sff -- Flags to safefile.
311*7c478bd9Sstevel@tonic-gate ** extension -- The extension for the file.
312*7c478bd9Sstevel@tonic-gate **
313*7c478bd9Sstevel@tonic-gate ** Returns:
314*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
315*7c478bd9Sstevel@tonic-gate */
316*7c478bd9Sstevel@tonic-gate
317*7c478bd9Sstevel@tonic-gate int
smdb_lock_file(lock_fd,db_name,mode,sff,extension)318*7c478bd9Sstevel@tonic-gate smdb_lock_file(lock_fd, db_name, mode, sff, extension)
319*7c478bd9Sstevel@tonic-gate int *lock_fd;
320*7c478bd9Sstevel@tonic-gate char *db_name;
321*7c478bd9Sstevel@tonic-gate int mode;
322*7c478bd9Sstevel@tonic-gate long sff;
323*7c478bd9Sstevel@tonic-gate char *extension;
324*7c478bd9Sstevel@tonic-gate {
325*7c478bd9Sstevel@tonic-gate int result;
326*7c478bd9Sstevel@tonic-gate char file_name[MAXPATHLEN];
327*7c478bd9Sstevel@tonic-gate
328*7c478bd9Sstevel@tonic-gate result = smdb_add_extension(file_name, sizeof file_name, db_name,
329*7c478bd9Sstevel@tonic-gate extension);
330*7c478bd9Sstevel@tonic-gate if (result != SMDBE_OK)
331*7c478bd9Sstevel@tonic-gate return result;
332*7c478bd9Sstevel@tonic-gate
333*7c478bd9Sstevel@tonic-gate *lock_fd = safeopen(file_name, mode & ~O_TRUNC, DBMMODE, sff);
334*7c478bd9Sstevel@tonic-gate if (*lock_fd < 0)
335*7c478bd9Sstevel@tonic-gate return errno;
336*7c478bd9Sstevel@tonic-gate
337*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
338*7c478bd9Sstevel@tonic-gate }
339*7c478bd9Sstevel@tonic-gate /*
340*7c478bd9Sstevel@tonic-gate ** SMDB_UNLOCK_FILE -- Unlocks a file
341*7c478bd9Sstevel@tonic-gate **
342*7c478bd9Sstevel@tonic-gate ** Unlocks a file.
343*7c478bd9Sstevel@tonic-gate **
344*7c478bd9Sstevel@tonic-gate ** Parameters:
345*7c478bd9Sstevel@tonic-gate ** lock_fd -- The descriptor for the locked file.
346*7c478bd9Sstevel@tonic-gate **
347*7c478bd9Sstevel@tonic-gate ** Returns:
348*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
349*7c478bd9Sstevel@tonic-gate */
350*7c478bd9Sstevel@tonic-gate
351*7c478bd9Sstevel@tonic-gate int
smdb_unlock_file(lock_fd)352*7c478bd9Sstevel@tonic-gate smdb_unlock_file(lock_fd)
353*7c478bd9Sstevel@tonic-gate int lock_fd;
354*7c478bd9Sstevel@tonic-gate {
355*7c478bd9Sstevel@tonic-gate int result;
356*7c478bd9Sstevel@tonic-gate
357*7c478bd9Sstevel@tonic-gate result = close(lock_fd);
358*7c478bd9Sstevel@tonic-gate if (result != 0)
359*7c478bd9Sstevel@tonic-gate return errno;
360*7c478bd9Sstevel@tonic-gate
361*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
362*7c478bd9Sstevel@tonic-gate }
363*7c478bd9Sstevel@tonic-gate /*
364*7c478bd9Sstevel@tonic-gate ** SMDB_LOCK_MAP -- Locks a database.
365*7c478bd9Sstevel@tonic-gate **
366*7c478bd9Sstevel@tonic-gate ** Parameters:
367*7c478bd9Sstevel@tonic-gate ** database -- database description.
368*7c478bd9Sstevel@tonic-gate ** type -- type of the lock. Bits can be:
369*7c478bd9Sstevel@tonic-gate ** LOCK_EX -- exclusive lock.
370*7c478bd9Sstevel@tonic-gate ** LOCK_NB -- non-blocking.
371*7c478bd9Sstevel@tonic-gate **
372*7c478bd9Sstevel@tonic-gate ** Returns:
373*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
374*7c478bd9Sstevel@tonic-gate */
375*7c478bd9Sstevel@tonic-gate
376*7c478bd9Sstevel@tonic-gate int
smdb_lock_map(database,type)377*7c478bd9Sstevel@tonic-gate smdb_lock_map(database, type)
378*7c478bd9Sstevel@tonic-gate SMDB_DATABASE *database;
379*7c478bd9Sstevel@tonic-gate int type;
380*7c478bd9Sstevel@tonic-gate {
381*7c478bd9Sstevel@tonic-gate int fd;
382*7c478bd9Sstevel@tonic-gate
383*7c478bd9Sstevel@tonic-gate fd = database->smdb_lockfd(database);
384*7c478bd9Sstevel@tonic-gate if (fd < 0)
385*7c478bd9Sstevel@tonic-gate return SMDBE_NOT_FOUND;
386*7c478bd9Sstevel@tonic-gate if (!smdb_lockfile(fd, type))
387*7c478bd9Sstevel@tonic-gate return SMDBE_LOCK_NOT_GRANTED;
388*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
389*7c478bd9Sstevel@tonic-gate }
390*7c478bd9Sstevel@tonic-gate /*
391*7c478bd9Sstevel@tonic-gate ** SMDB_UNLOCK_MAP -- Unlocks a database
392*7c478bd9Sstevel@tonic-gate **
393*7c478bd9Sstevel@tonic-gate ** Parameters:
394*7c478bd9Sstevel@tonic-gate ** database -- database description.
395*7c478bd9Sstevel@tonic-gate **
396*7c478bd9Sstevel@tonic-gate ** Returns:
397*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
398*7c478bd9Sstevel@tonic-gate */
399*7c478bd9Sstevel@tonic-gate
400*7c478bd9Sstevel@tonic-gate int
smdb_unlock_map(database)401*7c478bd9Sstevel@tonic-gate smdb_unlock_map(database)
402*7c478bd9Sstevel@tonic-gate SMDB_DATABASE *database;
403*7c478bd9Sstevel@tonic-gate {
404*7c478bd9Sstevel@tonic-gate int fd;
405*7c478bd9Sstevel@tonic-gate
406*7c478bd9Sstevel@tonic-gate fd = database->smdb_lockfd(database);
407*7c478bd9Sstevel@tonic-gate if (fd < 0)
408*7c478bd9Sstevel@tonic-gate return SMDBE_NOT_FOUND;
409*7c478bd9Sstevel@tonic-gate if (!smdb_lockfile(fd, LOCK_UN))
410*7c478bd9Sstevel@tonic-gate return SMDBE_LOCK_NOT_HELD;
411*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
412*7c478bd9Sstevel@tonic-gate }
413*7c478bd9Sstevel@tonic-gate /*
414*7c478bd9Sstevel@tonic-gate ** SMDB_SETUP_FILE -- Gets db file ready for use.
415*7c478bd9Sstevel@tonic-gate **
416*7c478bd9Sstevel@tonic-gate ** Makes sure permissions on file are safe and creates it if it
417*7c478bd9Sstevel@tonic-gate ** doesn't exist.
418*7c478bd9Sstevel@tonic-gate **
419*7c478bd9Sstevel@tonic-gate ** Parameters:
420*7c478bd9Sstevel@tonic-gate ** db_name -- The name of the database without extension.
421*7c478bd9Sstevel@tonic-gate ** extension -- The extension.
422*7c478bd9Sstevel@tonic-gate ** sff -- Flags to safefile.
423*7c478bd9Sstevel@tonic-gate ** mode_mask -- Mode bits that must match.
424*7c478bd9Sstevel@tonic-gate ** user_info -- Information on the user to use for file
425*7c478bd9Sstevel@tonic-gate ** permissions.
426*7c478bd9Sstevel@tonic-gate ** stat_info -- A place to put the stat info for the file.
427*7c478bd9Sstevel@tonic-gate ** Returns:
428*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
429*7c478bd9Sstevel@tonic-gate */
430*7c478bd9Sstevel@tonic-gate
431*7c478bd9Sstevel@tonic-gate int
smdb_setup_file(db_name,extension,mode_mask,sff,user_info,stat_info)432*7c478bd9Sstevel@tonic-gate smdb_setup_file(db_name, extension, mode_mask, sff, user_info, stat_info)
433*7c478bd9Sstevel@tonic-gate char *db_name;
434*7c478bd9Sstevel@tonic-gate char *extension;
435*7c478bd9Sstevel@tonic-gate int mode_mask;
436*7c478bd9Sstevel@tonic-gate long sff;
437*7c478bd9Sstevel@tonic-gate SMDB_USER_INFO *user_info;
438*7c478bd9Sstevel@tonic-gate struct stat *stat_info;
439*7c478bd9Sstevel@tonic-gate {
440*7c478bd9Sstevel@tonic-gate int st;
441*7c478bd9Sstevel@tonic-gate int result;
442*7c478bd9Sstevel@tonic-gate char db_file_name[MAXPATHLEN];
443*7c478bd9Sstevel@tonic-gate
444*7c478bd9Sstevel@tonic-gate result = smdb_add_extension(db_file_name, sizeof db_file_name, db_name,
445*7c478bd9Sstevel@tonic-gate extension);
446*7c478bd9Sstevel@tonic-gate if (result != SMDBE_OK)
447*7c478bd9Sstevel@tonic-gate return result;
448*7c478bd9Sstevel@tonic-gate
449*7c478bd9Sstevel@tonic-gate st = safefile(db_file_name, user_info->smdbu_id,
450*7c478bd9Sstevel@tonic-gate user_info->smdbu_group_id, user_info->smdbu_name,
451*7c478bd9Sstevel@tonic-gate sff, mode_mask, stat_info);
452*7c478bd9Sstevel@tonic-gate if (st != 0)
453*7c478bd9Sstevel@tonic-gate return st;
454*7c478bd9Sstevel@tonic-gate
455*7c478bd9Sstevel@tonic-gate return SMDBE_OK;
456*7c478bd9Sstevel@tonic-gate }
457*7c478bd9Sstevel@tonic-gate /*
458*7c478bd9Sstevel@tonic-gate ** SMDB_FILECHANGED -- Checks to see if a file changed.
459*7c478bd9Sstevel@tonic-gate **
460*7c478bd9Sstevel@tonic-gate ** Compares the passed in stat_info with a current stat on
461*7c478bd9Sstevel@tonic-gate ** the passed in file descriptor. Check filechanged for
462*7c478bd9Sstevel@tonic-gate ** return values.
463*7c478bd9Sstevel@tonic-gate **
464*7c478bd9Sstevel@tonic-gate ** Parameters:
465*7c478bd9Sstevel@tonic-gate ** db_name -- The name of the database without extension.
466*7c478bd9Sstevel@tonic-gate ** extension -- The extension.
467*7c478bd9Sstevel@tonic-gate ** db_fd -- A file descriptor for the database file.
468*7c478bd9Sstevel@tonic-gate ** stat_info -- An old stat_info.
469*7c478bd9Sstevel@tonic-gate ** Returns:
470*7c478bd9Sstevel@tonic-gate ** SMDBE_OK -- Success, otherwise errno.
471*7c478bd9Sstevel@tonic-gate */
472*7c478bd9Sstevel@tonic-gate
473*7c478bd9Sstevel@tonic-gate int
smdb_filechanged(db_name,extension,db_fd,stat_info)474*7c478bd9Sstevel@tonic-gate smdb_filechanged(db_name, extension, db_fd, stat_info)
475*7c478bd9Sstevel@tonic-gate char *db_name;
476*7c478bd9Sstevel@tonic-gate char *extension;
477*7c478bd9Sstevel@tonic-gate int db_fd;
478*7c478bd9Sstevel@tonic-gate struct stat *stat_info;
479*7c478bd9Sstevel@tonic-gate {
480*7c478bd9Sstevel@tonic-gate int result;
481*7c478bd9Sstevel@tonic-gate char db_file_name[MAXPATHLEN];
482*7c478bd9Sstevel@tonic-gate
483*7c478bd9Sstevel@tonic-gate result = smdb_add_extension(db_file_name, sizeof db_file_name, db_name,
484*7c478bd9Sstevel@tonic-gate extension);
485*7c478bd9Sstevel@tonic-gate if (result != SMDBE_OK)
486*7c478bd9Sstevel@tonic-gate return result;
487*7c478bd9Sstevel@tonic-gate return filechanged(db_file_name, db_fd, stat_info);
488*7c478bd9Sstevel@tonic-gate }
489*7c478bd9Sstevel@tonic-gate /*
490*7c478bd9Sstevel@tonic-gate ** SMDB_PRINT_AVAILABLE_TYPES -- Prints the names of the available types.
491*7c478bd9Sstevel@tonic-gate **
492*7c478bd9Sstevel@tonic-gate ** Parameters:
493*7c478bd9Sstevel@tonic-gate ** None
494*7c478bd9Sstevel@tonic-gate **
495*7c478bd9Sstevel@tonic-gate ** Returns:
496*7c478bd9Sstevel@tonic-gate ** None
497*7c478bd9Sstevel@tonic-gate */
498*7c478bd9Sstevel@tonic-gate
499*7c478bd9Sstevel@tonic-gate void
smdb_print_available_types()500*7c478bd9Sstevel@tonic-gate smdb_print_available_types()
501*7c478bd9Sstevel@tonic-gate {
502*7c478bd9Sstevel@tonic-gate #ifdef NDBM
503*7c478bd9Sstevel@tonic-gate printf("dbm\n");
504*7c478bd9Sstevel@tonic-gate #endif /* NDBM */
505*7c478bd9Sstevel@tonic-gate #ifdef NEWDB
506*7c478bd9Sstevel@tonic-gate printf("hash\n");
507*7c478bd9Sstevel@tonic-gate printf("btree\n");
508*7c478bd9Sstevel@tonic-gate #endif /* NEWDB */
509*7c478bd9Sstevel@tonic-gate }
510*7c478bd9Sstevel@tonic-gate /*
511*7c478bd9Sstevel@tonic-gate ** SMDB_DB_DEFINITION -- Given a database type, return database definition
512*7c478bd9Sstevel@tonic-gate **
513*7c478bd9Sstevel@tonic-gate ** Reads though a structure making an association with the database
514*7c478bd9Sstevel@tonic-gate ** type and the required cpp define from sendmail/README.
515*7c478bd9Sstevel@tonic-gate ** List size is dynamic and must be NULL terminated.
516*7c478bd9Sstevel@tonic-gate **
517*7c478bd9Sstevel@tonic-gate ** Parameters:
518*7c478bd9Sstevel@tonic-gate ** type -- The name of the database type.
519*7c478bd9Sstevel@tonic-gate **
520*7c478bd9Sstevel@tonic-gate ** Returns:
521*7c478bd9Sstevel@tonic-gate ** definition for type, otherwise NULL.
522*7c478bd9Sstevel@tonic-gate */
523*7c478bd9Sstevel@tonic-gate
524*7c478bd9Sstevel@tonic-gate typedef struct
525*7c478bd9Sstevel@tonic-gate {
526*7c478bd9Sstevel@tonic-gate SMDB_DBTYPE type;
527*7c478bd9Sstevel@tonic-gate char *dbdef;
528*7c478bd9Sstevel@tonic-gate } dbtype;
529*7c478bd9Sstevel@tonic-gate
530*7c478bd9Sstevel@tonic-gate static dbtype DatabaseDefs[] =
531*7c478bd9Sstevel@tonic-gate {
532*7c478bd9Sstevel@tonic-gate { SMDB_TYPE_HASH, "NEWDB" },
533*7c478bd9Sstevel@tonic-gate { SMDB_TYPE_BTREE, "NEWDB" },
534*7c478bd9Sstevel@tonic-gate { SMDB_TYPE_NDBM, "NDBM" },
535*7c478bd9Sstevel@tonic-gate { NULL, "OOPS" }
536*7c478bd9Sstevel@tonic-gate };
537*7c478bd9Sstevel@tonic-gate
538*7c478bd9Sstevel@tonic-gate char *
smdb_db_definition(type)539*7c478bd9Sstevel@tonic-gate smdb_db_definition(type)
540*7c478bd9Sstevel@tonic-gate SMDB_DBTYPE type;
541*7c478bd9Sstevel@tonic-gate {
542*7c478bd9Sstevel@tonic-gate dbtype *ptr = DatabaseDefs;
543*7c478bd9Sstevel@tonic-gate
544*7c478bd9Sstevel@tonic-gate while (ptr != NULL && ptr->type != NULL)
545*7c478bd9Sstevel@tonic-gate {
546*7c478bd9Sstevel@tonic-gate if (strcmp(type, ptr->type) == 0)
547*7c478bd9Sstevel@tonic-gate return ptr->dbdef;
548*7c478bd9Sstevel@tonic-gate ptr++;
549*7c478bd9Sstevel@tonic-gate }
550*7c478bd9Sstevel@tonic-gate return NULL;
551*7c478bd9Sstevel@tonic-gate }
552