1 /* vi: set sw=4 ts=4: */
2 /* Copyright (C) 2003 Manuel Novoa III
4 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
7 /* Nov 6, 2003 Initial version.
9 * NOTE: This implementation is quite strict about requiring all
10 * field seperators. It also does not allow leading whitespace
11 * except when processing the numeric fields. glibc is more
12 * lenient. See the various glibc difference comments below.
15 * Move to dynamic allocation of (currently statically allocated)
16 * buffers; especially for the group-related functions since
17 * large group member lists will cause error returns.
24 #define _PATH_SHADOW "/etc/shadow"
27 #define _PATH_PASSWD "/etc/passwd"
30 #define _PATH_GROUP "/etc/group"
33 /**********************************************************************/
34 /* Sizes for statically allocated buffers. */
36 /* If you change these values, also change _SC_GETPW_R_SIZE_MAX and
37 * _SC_GETGR_R_SIZE_MAX in libc/unistd/sysconf.c to match */
38 #define PWD_BUFFER_SIZE 256
39 #define GRP_BUFFER_SIZE 256
41 /**********************************************************************/
42 /* Prototypes for internal functions. */
44 static int bb__pgsreader(
45 int FAST_FUNC (*parserfunc)(void *d, char *line),
47 char *__restrict line_buff,
51 static int FAST_FUNC bb__parsepwent(void *pw, char *line);
52 static int FAST_FUNC bb__parsegrent(void *gr, char *line);
53 #if ENABLE_USE_BB_SHADOW
54 static int FAST_FUNC bb__parsespent(void *sp, char *line);
57 /**********************************************************************/
58 /* We avoid having big global data. */
61 /* Smaller things first */
62 struct passwd getpwuid_resultbuf;
63 struct group getgrgid_resultbuf;
64 struct passwd getpwnam_resultbuf;
65 struct group getgrnam_resultbuf;
67 char getpwuid_buffer[PWD_BUFFER_SIZE];
68 char getgrgid_buffer[GRP_BUFFER_SIZE];
69 char getpwnam_buffer[PWD_BUFFER_SIZE];
70 char getgrnam_buffer[GRP_BUFFER_SIZE];
72 struct passwd fgetpwent_resultbuf;
73 struct group fgetgrent_resultbuf;
74 struct spwd fgetspent_resultbuf;
75 char fgetpwent_buffer[PWD_BUFFER_SIZE];
76 char fgetgrent_buffer[GRP_BUFFER_SIZE];
77 char fgetspent_buffer[PWD_BUFFER_SIZE];
79 #if 0 //ENABLE_USE_BB_SHADOW
80 struct spwd getspuid_resultbuf;
81 struct spwd getspnam_resultbuf;
82 char getspuid_buffer[PWD_BUFFER_SIZE];
83 char getspnam_buffer[PWD_BUFFER_SIZE];
85 // Not converted - too small to bother
86 //pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
87 //FILE *pwf /*= NULL*/;
88 //FILE *grf /*= NULL*/;
89 //FILE *spf /*= NULL*/;
91 struct passwd getpwent_pwd;
92 struct group getgrent_gr;
93 char getpwent_line_buff[PWD_BUFFER_SIZE];
94 char getgrent_line_buff[GRP_BUFFER_SIZE];
96 #if 0 //ENABLE_USE_BB_SHADOW
97 struct spwd getspent_spwd;
98 struct spwd sgetspent_spwd;
99 char getspent_line_buff[PWD_BUFFER_SIZE];
100 char sgetspent_line_buff[PWD_BUFFER_SIZE];
104 static struct statics *ptr_to_statics;
106 static struct statics *get_S(void)
109 ptr_to_statics = xzalloc(sizeof(*ptr_to_statics));
110 return ptr_to_statics;
113 /* Always use in this order, get_S() must be called first */
114 #define RESULTBUF(name) &((S = get_S())->name##_resultbuf)
115 #define BUFFER(name) (S->name##_buffer)
117 /**********************************************************************/
118 /* For the various fget??ent_r funcs, return
121 * ENOENT: end-of-file encountered
122 * ERANGE: buflen too small
123 * other error values possible. See bb__pgsreader.
125 * Also, *result == resultbuf on success and NULL on failure.
127 * NOTE: glibc difference - For the ENOENT case, glibc also sets errno.
128 * We do not, as it really isn't an error if we reach the end-of-file.
129 * Doing so is analogous to having fgetc() set errno on EOF.
131 /**********************************************************************/
133 int fgetpwent_r(FILE *__restrict stream, struct passwd *__restrict resultbuf,
134 char *__restrict buffer, size_t buflen,
135 struct passwd **__restrict result)
141 rv = bb__pgsreader(bb__parsepwent, resultbuf, buffer, buflen, stream);
149 int fgetgrent_r(FILE *__restrict stream, struct group *__restrict resultbuf,
150 char *__restrict buffer, size_t buflen,
151 struct group **__restrict result)
157 rv = bb__pgsreader(bb__parsegrent, resultbuf, buffer, buflen, stream);
165 #if ENABLE_USE_BB_SHADOW
166 #ifdef UNUSED_FOR_NOW
167 int fgetspent_r(FILE *__restrict stream, struct spwd *__restrict resultbuf,
168 char *__restrict buffer, size_t buflen,
169 struct spwd **__restrict result)
175 rv = bb__pgsreader(bb__parsespent, resultbuf, buffer, buflen, stream);
185 /**********************************************************************/
186 /* For the various fget??ent funcs, return NULL on failure and a
187 * pointer to the appropriate struct (statically allocated) on success.
188 * TODO: audit & stop using these in bbox, they pull in static buffers */
189 /**********************************************************************/
191 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
192 struct passwd *fgetpwent(FILE *stream)
195 struct passwd *resultbuf = RESULTBUF(fgetpwent);
196 char *buffer = BUFFER(fgetpwent);
197 struct passwd *result;
199 fgetpwent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetpwent)), &result);
203 struct group *fgetgrent(FILE *stream)
206 struct group *resultbuf = RESULTBUF(fgetgrent);
207 char *buffer = BUFFER(fgetgrent);
208 struct group *result;
210 fgetgrent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetgrent)), &result);
215 #if ENABLE_USE_BB_SHADOW
216 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
217 struct spwd *fgetspent(FILE *stream)
220 struct spwd *resultbuf = RESULTBUF(fgetspent);
221 char *buffer = BUFFER(fgetspent);
224 fgetspent_r(stream, resultbuf, buffer, sizeof(BUFFER(fgetspent)), &result);
229 #ifdef UNUSED_FOR_NOW
230 int sgetspent_r(const char *string, struct spwd *result_buf,
231 char *buffer, size_t buflen, struct spwd **result)
237 if (buflen < PWD_BUFFER_SIZE) {
243 if (string != buffer) {
244 if (strlen(string) >= buflen) {
247 strcpy(buffer, string);
250 rv = bb__parsespent(result_buf, buffer);
252 *result = result_buf;
259 #endif /* ENABLE_USE_BB_SHADOW */
261 /**********************************************************************/
263 #define GETXXKEY_R_FUNC getpwnam_r
264 #define GETXXKEY_R_PARSER bb__parsepwent
265 #define GETXXKEY_R_ENTTYPE struct passwd
266 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->pw_name, key))
267 #define GETXXKEY_R_KEYTYPE const char *__restrict
268 #define GETXXKEY_R_PATHNAME _PATH_PASSWD
269 #include "pwd_grp_internal.c"
271 #define GETXXKEY_R_FUNC getgrnam_r
272 #define GETXXKEY_R_PARSER bb__parsegrent
273 #define GETXXKEY_R_ENTTYPE struct group
274 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->gr_name, key))
275 #define GETXXKEY_R_KEYTYPE const char *__restrict
276 #define GETXXKEY_R_PATHNAME _PATH_GROUP
277 #include "pwd_grp_internal.c"
279 #if ENABLE_USE_BB_SHADOW
280 #define GETXXKEY_R_FUNC getspnam_r
281 #define GETXXKEY_R_PARSER bb__parsespent
282 #define GETXXKEY_R_ENTTYPE struct spwd
283 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->sp_namp, key))
284 #define GETXXKEY_R_KEYTYPE const char *__restrict
285 #define GETXXKEY_R_PATHNAME _PATH_SHADOW
286 #include "pwd_grp_internal.c"
289 #define GETXXKEY_R_FUNC getpwuid_r
290 #define GETXXKEY_R_PARSER bb__parsepwent
291 #define GETXXKEY_R_ENTTYPE struct passwd
292 #define GETXXKEY_R_TEST(ENT) ((ENT)->pw_uid == key)
293 #define GETXXKEY_R_KEYTYPE uid_t
294 #define GETXXKEY_R_PATHNAME _PATH_PASSWD
295 #include "pwd_grp_internal.c"
297 #define GETXXKEY_R_FUNC getgrgid_r
298 #define GETXXKEY_R_PARSER bb__parsegrent
299 #define GETXXKEY_R_ENTTYPE struct group
300 #define GETXXKEY_R_TEST(ENT) ((ENT)->gr_gid == key)
301 #define GETXXKEY_R_KEYTYPE gid_t
302 #define GETXXKEY_R_PATHNAME _PATH_GROUP
303 #include "pwd_grp_internal.c"
305 /**********************************************************************/
306 /* TODO: audit & stop using these in bbox, they pull in static buffers */
308 /* This one has many users */
309 struct passwd *getpwuid(uid_t uid)
312 struct passwd *resultbuf = RESULTBUF(getpwuid);
313 char *buffer = BUFFER(getpwuid);
314 struct passwd *result;
316 getpwuid_r(uid, resultbuf, buffer, sizeof(BUFFER(getpwuid)), &result);
320 /* This one has many users */
321 struct group *getgrgid(gid_t gid)
324 struct group *resultbuf = RESULTBUF(getgrgid);
325 char *buffer = BUFFER(getgrgid);
326 struct group *result;
328 getgrgid_r(gid, resultbuf, buffer, sizeof(BUFFER(getgrgid)), &result);
332 #if 0 //ENABLE_USE_BB_SHADOW
333 /* This function is non-standard and is currently not built. It seems
334 * to have been created as a reentrant version of the non-standard
335 * functions getspuid. Why getspuid was added, I do not know. */
336 int getspuid_r(uid_t uid, struct spwd *__restrict resultbuf,
337 char *__restrict buffer, size_t buflen,
338 struct spwd **__restrict result)
342 struct passwd password;
343 char pwd_buff[PWD_BUFFER_SIZE];
346 rv = getpwuid_r(uid, &password, pwd_buff, sizeof(pwd_buff), &pp);
348 rv = getspnam_r(password.pw_name, resultbuf, buffer, buflen, result);
354 /* This function is non-standard and is currently not built.
355 * Why it was added, I do not know. */
356 struct spwd *getspuid(uid_t uid)
359 struct spwd *resultbuf = RESULTBUF(getspuid);
360 char *buffer = BUFFER(getspuid);
363 getspuid_r(uid, resultbuf, buffer, sizeof(BUFFER(getspuid)), &result);
368 /* This one has many users */
369 struct passwd *getpwnam(const char *name)
372 struct passwd *resultbuf = RESULTBUF(getpwnam);
373 char *buffer = BUFFER(getpwnam);
374 struct passwd *result;
376 getpwnam_r(name, resultbuf, buffer, sizeof(BUFFER(getpwnam)), &result);
380 /* This one has many users */
381 struct group *getgrnam(const char *name)
384 struct group *resultbuf = RESULTBUF(getgrnam);
385 char *buffer = BUFFER(getgrnam);
386 struct group *result;
388 getgrnam_r(name, resultbuf, buffer, sizeof(BUFFER(getgrnam)), &result);
392 #if 0 //ENABLE_USE_BB_SHADOW
393 struct spwd *getspnam(const char *name)
396 struct spwd *resultbuf = RESULTBUF(getspnam);
397 char *buffer = BUFFER(getspnam);
400 getspnam_r(name, resultbuf, buffer, sizeof(BUFFER(getspnam)), &result);
405 /**********************************************************************/
407 /* FIXME: we don't have such CONFIG_xx - ?! */
409 #if defined CONFIG_USE_BB_THREADSAFE_SHADOW && defined PTHREAD_MUTEX_INITIALIZER
410 static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
411 # define LOCK pthread_mutex_lock(&mylock)
412 # define UNLOCK pthread_mutex_unlock(&mylock);
414 # define LOCK ((void) 0)
415 # define UNLOCK ((void) 0)
418 static FILE *pwf /*= NULL*/;
439 int getpwent_r(struct passwd *__restrict resultbuf,
440 char *__restrict buffer, size_t buflen,
441 struct passwd **__restrict result)
446 *result = NULL; /* In case of error... */
449 pwf = fopen_for_read(_PATH_PASSWD);
456 rv = bb__pgsreader(bb__parsepwent, resultbuf, buffer, buflen, pwf);
466 static FILE *grf /*= NULL*/;
486 int getgrent_r(struct group *__restrict resultbuf,
487 char *__restrict buffer, size_t buflen,
488 struct group **__restrict result)
493 *result = NULL; /* In case of error... */
496 grf = fopen_for_read(_PATH_GROUP);
503 rv = bb__pgsreader(bb__parsegrent, resultbuf, buffer, buflen, grf);
513 #ifdef UNUSED_FOR_NOW
514 #if ENABLE_USE_BB_SHADOW
515 static FILE *spf /*= NULL*/;
535 int getspent_r(struct spwd *resultbuf, char *buffer,
536 size_t buflen, struct spwd **result)
541 *result = NULL; /* In case of error... */
544 spf = fopen_for_read(_PATH_SHADOW);
551 rv = bb__pgsreader(bb__parsespent, resultbuf, buffer, buflen, spf);
561 #endif /* UNUSED_FOR_NOW */
563 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
564 struct passwd *getpwent(void)
566 static char line_buff[PWD_BUFFER_SIZE];
567 static struct passwd pwd;
568 struct passwd *result;
570 getpwent_r(&pwd, line_buff, sizeof(line_buff), &result);
574 struct group *getgrent(void)
576 static char line_buff[GRP_BUFFER_SIZE];
577 static struct group gr;
578 struct group *result;
580 getgrent_r(&gr, line_buff, sizeof(line_buff), &result);
584 #if ENABLE_USE_BB_SHADOW
585 struct spwd *getspent(void)
587 static char line_buff[PWD_BUFFER_SIZE];
588 static struct spwd spwd;
591 getspent_r(&spwd, line_buff, sizeof(line_buff), &result);
595 struct spwd *sgetspent(const char *string)
597 static char line_buff[PWD_BUFFER_SIZE];
598 static struct spwd spwd;
601 sgetspent_r(string, &spwd, line_buff, sizeof(line_buff), &result);
605 #endif /* UNUSED_SINCE_WE_AVOID_STATIC_BUFS */
607 static gid_t *getgrouplist_internal(int *ngroups_ptr, const char *user, gid_t gid)
613 char buff[PWD_BUFFER_SIZE];
615 /* We alloc space for 8 gids at a time. */
616 group_list = xmalloc(8 * sizeof(group_list[0]));
620 grfile = fopen_for_read(_PATH_GROUP);
622 while (!bb__pgsreader(bb__parsegrent, &group, buff, sizeof(buff), grfile)) {
624 assert(group.gr_mem); /* Must have at least a NULL terminator. */
625 if (group.gr_gid == gid)
627 for (m = group.gr_mem; *m; m++) {
628 if (strcmp(*m, user) != 0)
630 group_list = xrealloc_vector(group_list, /*8=2^3:*/ 3, ngroups);
631 group_list[ngroups++] = group.gr_gid;
637 *ngroups_ptr = ngroups;
641 int initgroups(const char *user, gid_t gid)
644 gid_t *group_list = getgrouplist_internal(&ngroups, user, gid);
646 ngroups = setgroups(ngroups, group_list);
651 int getgrouplist(const char *user, gid_t gid, gid_t *groups, int *ngroups)
653 int ngroups_old = *ngroups;
654 gid_t *group_list = getgrouplist_internal(ngroups, user, gid);
656 if (*ngroups <= ngroups_old) {
657 ngroups_old = *ngroups;
658 memcpy(groups, group_list, ngroups_old * sizeof(groups[0]));
666 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
667 int putpwent(const struct passwd *__restrict p, FILE *__restrict f)
672 /* glibc does this check */
679 /* No extra thread locking is needed above what fprintf does. */
680 if (fprintf(f, "%s:%s:%lu:%lu:%s:%s:%s\n",
681 p->pw_name, p->pw_passwd,
682 (unsigned long)(p->pw_uid),
683 (unsigned long)(p->pw_gid),
684 p->pw_gecos, p->pw_dir, p->pw_shell) >= 0
692 int putgrent(const struct group *__restrict p, FILE *__restrict f)
697 /* glibc does this check */
704 if (fprintf(f, "%s:%s:%lu:",
705 p->gr_name, p->gr_passwd,
706 (unsigned long)(p->gr_gid)) >= 0
708 static const char format[] ALIGN1 = ",%s";
720 if (fputc('\n', f) >= 0) {
725 if (fprintf(f, fmt, *m) < 0) {
737 #if ENABLE_USE_BB_SHADOW
738 #ifdef UNUSED_FOR_NOW
739 static const unsigned char put_sp_off[] ALIGN1 = {
740 offsetof(struct spwd, sp_lstchg), /* 2 - not a char ptr */
741 offsetof(struct spwd, sp_min), /* 3 - not a char ptr */
742 offsetof(struct spwd, sp_max), /* 4 - not a char ptr */
743 offsetof(struct spwd, sp_warn), /* 5 - not a char ptr */
744 offsetof(struct spwd, sp_inact), /* 6 - not a char ptr */
745 offsetof(struct spwd, sp_expire) /* 7 - not a char ptr */
748 int putspent(const struct spwd *p, FILE *stream)
755 /* Unlike putpwent and putgrent, glibc does not check the args. */
756 if (fprintf(stream, "%s:%s:", p->sp_namp,
757 (p->sp_pwdp ? p->sp_pwdp : "")) < 0
762 for (i = 0; i < sizeof(put_sp_off); i++) {
764 x = *(long *)((char *)p + put_sp_off[i]);
768 if (fprintf(stream, fmt, x) < 0) {
773 if ((p->sp_flag != ~0UL) && (fprintf(stream, "%lu", p->sp_flag) < 0)) {
777 if (fputc('\n', stream) > 0) {
785 #endif /* USE_BB_SHADOW */
787 /**********************************************************************/
788 /* Internal functions */
789 /**********************************************************************/
791 static const unsigned char pw_off[] ALIGN1 = {
792 offsetof(struct passwd, pw_name), /* 0 */
793 offsetof(struct passwd, pw_passwd), /* 1 */
794 offsetof(struct passwd, pw_uid), /* 2 - not a char ptr */
795 offsetof(struct passwd, pw_gid), /* 3 - not a char ptr */
796 offsetof(struct passwd, pw_gecos), /* 4 */
797 offsetof(struct passwd, pw_dir), /* 5 */
798 offsetof(struct passwd, pw_shell) /* 6 */
801 static int FAST_FUNC bb__parsepwent(void *data, char *line)
809 p = (char *) data + pw_off[i];
811 if (i < 2 || i > 3) {
812 *((char **) p) = line;
816 /* NOTE: glibc difference - glibc allows omission of
817 * ':' seperators after the gid field if all remaining
818 * entries are empty. We require all separators. */
819 line = strchr(line, ':');
824 unsigned long t = strtoul(line, &endptr, 10);
825 /* Make sure we had at least one digit, and that the
826 * failing char is the next field seperator ':'. See
827 * glibc difference note above. */
828 /* TODO: Also check for leading whitespace? */
829 if ((endptr == line) || (*endptr != ':')) {
833 if (i & 1) { /* i == 3 -- gid */
835 } else { /* i == 2 -- uid */
847 /**********************************************************************/
849 static const unsigned char gr_off[] ALIGN1 = {
850 offsetof(struct group, gr_name), /* 0 */
851 offsetof(struct group, gr_passwd), /* 1 */
852 offsetof(struct group, gr_gid) /* 2 - not a char ptr */
855 static int FAST_FUNC bb__parsegrent(void *data, char *line)
863 end_of_buf = ((struct group *) data)->gr_name; /* Evil hack! */
866 p = (char *) data + gr_off[i];
869 *((char **) p) = line;
870 line = strchr(line, ':');
877 *((gid_t *) p) = strtoul(line, &endptr, 10);
879 /* NOTE: glibc difference - glibc allows omission of the
880 * trailing colon when there is no member list. We treat
881 * this as an error. */
883 /* Make sure we had at least one digit, and that the
884 * failing char is the next field seperator ':'. See
885 * glibc difference note above. */
886 if ((endptr == line) || (*endptr != ':')) {
890 i = 1; /* Count terminating NULL ptr. */
893 if (p[1]) { /* We have a member list to process. */
894 /* Overwrite the last ':' with a ',' before counting.
895 * This allows us to (1) test for initial ','
896 * and (2) adds one ',' so that the number of commas
897 * equals the member count. */
900 /* NOTE: glibc difference - glibc allows and trims leading
901 * (but not trailing) space. We treat this as an error. */
902 /* NOTE: glibc difference - glibc allows consecutive and
903 * trailing commas, and ignores "empty string" users. We
904 * treat this as an error. */
907 *p = 0; /* nul-terminate each member string. */
908 if (!*++p || (*p == ',') || isspace(*p)) {
915 /* Now align (p+1), rounding up. */
916 /* Assumes sizeof(char **) is a power of 2. */
917 members = (char **)( (((intptr_t) p) + sizeof(char **))
918 & ~((intptr_t)(sizeof(char **) - 1)) );
920 if (((char *)(members + i)) > end_of_buf) { /* No space. */
924 ((struct group *) data)->gr_mem = members;
927 p = endptr; /* Pointing to char prior to first member. */
946 /**********************************************************************/
948 #if ENABLE_USE_BB_SHADOW
949 static const unsigned char sp_off[] ALIGN1 = {
950 offsetof(struct spwd, sp_namp), /* 0: char* */
951 offsetof(struct spwd, sp_pwdp), /* 1: char* */
952 offsetof(struct spwd, sp_lstchg), /* 2: long */
953 offsetof(struct spwd, sp_min), /* 3: long */
954 offsetof(struct spwd, sp_max), /* 4: long */
955 offsetof(struct spwd, sp_warn), /* 5: long */
956 offsetof(struct spwd, sp_inact), /* 6: long */
957 offsetof(struct spwd, sp_expire), /* 7: long */
958 offsetof(struct spwd, sp_flag) /* 8: unsigned long */
961 static int FAST_FUNC bb__parsespent(void *data, char *line)
969 p = (char *) data + sp_off[i];
971 *((char **) p) = line;
972 line = strchr(line, ':');
977 *((long *) p) = strtoul(line, &endptr, 10);
978 if (endptr == line) {
986 return 0; /* all ok */
1000 /**********************************************************************/
1002 /* Reads until EOF, or until it finds a line which fits in the buffer
1003 * and for which the parser function succeeds.
1005 * Returns 0 on success and ENOENT for end-of-file (glibc convention).
1007 static int bb__pgsreader(
1008 int FAST_FUNC (*parserfunc)(void *d, char *line),
1010 char *__restrict line_buff,
1017 if (buflen < PWD_BUFFER_SIZE) {
1024 if (!fgets(line_buff, buflen, f)) {
1032 int line_len = strlen(line_buff) - 1;
1033 if (line_len >= 0 && line_buff[line_len] == '\n') {
1034 line_buff[line_len] = '\0';
1036 if (line_len + 2 == buflen) {
1037 /* A start (or continuation) of overlong line */
1040 } /* else: a last line in the file, and it has no '\n' */
1044 /* This "line" is a remainder of overlong line, ignore */
1049 /* NOTE: glibc difference - glibc strips leading whitespace from
1050 * records. We do not allow leading whitespace. */
1052 /* Skip empty lines, comment lines, and lines with leading
1054 if (line_buff[0] != '\0' && line_buff[0] != '#' && !isspace(line_buff[0])) {
1055 if (parserfunc == bb__parsegrent) {
1056 /* Do evil group hack:
1057 * The group entry parsing function needs to know where
1058 * the end of the buffer is so that it can construct the
1059 * group member ptr table. */
1060 ((struct group *) data)->gr_name = line_buff + buflen;
1062 if (parserfunc(data, line_buff) == 0) {