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.
23 /**********************************************************************/
24 /* Sizes for statically allocated buffers. */
26 #define PWD_BUFFER_SIZE 256
27 #define GRP_BUFFER_SIZE 256
29 /**********************************************************************/
30 /* Prototypes for internal functions. */
32 static int bb__pgsreader(
33 int FAST_FUNC (*parserfunc
)(void *d
, char *line
),
35 char *__restrict line_buff
,
39 static int FAST_FUNC
bb__parsepwent(void *pw
, char *line
);
40 static int FAST_FUNC
bb__parsegrent(void *gr
, char *line
);
41 #if ENABLE_USE_BB_SHADOW
42 static int FAST_FUNC
bb__parsespent(void *sp
, char *line
);
45 /**********************************************************************/
46 /* We avoid having big global data. */
49 /* Smaller things first */
50 /* It's ok to use one buffer for getpwuid and getpwnam. Manpage says:
51 * "The return value may point to a static area, and may be overwritten
52 * by subsequent calls to getpwent(), getpwnam(), or getpwuid()."
54 struct passwd getpw_resultbuf
;
55 struct group getgr_resultbuf
;
57 char getpw_buffer
[PWD_BUFFER_SIZE
];
58 char getgr_buffer
[GRP_BUFFER_SIZE
];
59 #if 0 //ENABLE_USE_BB_SHADOW
60 struct spwd getsp_resultbuf
;
61 char getsp_buffer
[PWD_BUFFER_SIZE
];
63 // Not converted - too small to bother
64 //pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
65 //FILE *pwf /*= NULL*/;
66 //FILE *grf /*= NULL*/;
67 //FILE *spf /*= NULL*/;
70 static struct statics
*ptr_to_statics
;
72 static struct statics
*get_S(void)
75 ptr_to_statics
= xzalloc(sizeof(*ptr_to_statics
));
76 return ptr_to_statics
;
79 /* Always use in this order, get_S() must be called first */
80 #define RESULTBUF(name) &((S = get_S())->name##_resultbuf)
81 #define BUFFER(name) (S->name##_buffer)
83 /**********************************************************************/
84 /* For the various fget??ent_r funcs, return
87 * ENOENT: end-of-file encountered
88 * ERANGE: buflen too small
89 * other error values possible. See bb__pgsreader.
91 * Also, *result == resultbuf on success and NULL on failure.
93 * NOTE: glibc difference - For the ENOENT case, glibc also sets errno.
94 * We do not, as it really isn't an error if we reach the end-of-file.
95 * Doing so is analogous to having fgetc() set errno on EOF.
97 /**********************************************************************/
99 int fgetpwent_r(FILE *__restrict stream
, struct passwd
*__restrict resultbuf
,
100 char *__restrict buffer
, size_t buflen
,
101 struct passwd
**__restrict result
)
107 rv
= bb__pgsreader(bb__parsepwent
, resultbuf
, buffer
, buflen
, stream
);
115 int fgetgrent_r(FILE *__restrict stream
, struct group
*__restrict resultbuf
,
116 char *__restrict buffer
, size_t buflen
,
117 struct group
**__restrict result
)
123 rv
= bb__pgsreader(bb__parsegrent
, resultbuf
, buffer
, buflen
, stream
);
131 #if ENABLE_USE_BB_SHADOW
132 #ifdef UNUSED_FOR_NOW
133 int fgetspent_r(FILE *__restrict stream
, struct spwd
*__restrict resultbuf
,
134 char *__restrict buffer
, size_t buflen
,
135 struct spwd
**__restrict result
)
141 rv
= bb__pgsreader(bb__parsespent
, resultbuf
, buffer
, buflen
, stream
);
151 /**********************************************************************/
152 /* For the various fget??ent funcs, return NULL on failure and a
153 * pointer to the appropriate struct (statically allocated) on success.
154 * TODO: audit & stop using these in bbox, they pull in static buffers */
155 /**********************************************************************/
157 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
158 struct passwd
*fgetpwent(FILE *stream
)
161 struct passwd
*resultbuf
= RESULTBUF(getpw
);
162 char *buffer
= BUFFER(getpw
);
163 struct passwd
*result
;
165 fgetpwent_r(stream
, resultbuf
, buffer
, sizeof(BUFFER(getpw
)), &result
);
169 struct group
*fgetgrent(FILE *stream
)
172 struct group
*resultbuf
= RESULTBUF(getgr
);
173 char *buffer
= BUFFER(getgr
);
174 struct group
*result
;
176 fgetgrent_r(stream
, resultbuf
, buffer
, sizeof(BUFFER(getgr
)), &result
);
181 #if ENABLE_USE_BB_SHADOW
182 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
183 struct spwd
*fgetspent(FILE *stream
)
186 struct spwd
*resultbuf
= RESULTBUF(getsp
);
187 char *buffer
= BUFFER(getsp
);
190 fgetspent_r(stream
, resultbuf
, buffer
, sizeof(BUFFER(getsp
)), &result
);
195 #ifdef UNUSED_FOR_NOW
196 int sgetspent_r(const char *string
, struct spwd
*result_buf
,
197 char *buffer
, size_t buflen
, struct spwd
**result
)
203 if (buflen
< PWD_BUFFER_SIZE
) {
209 if (string
!= buffer
) {
210 if (strlen(string
) >= buflen
) {
213 strcpy(buffer
, string
);
216 rv
= bb__parsespent(result_buf
, buffer
);
218 *result
= result_buf
;
225 #endif /* ENABLE_USE_BB_SHADOW */
227 /**********************************************************************/
229 #define GETXXKEY_R_FUNC getpwnam_r
230 #define GETXXKEY_R_PARSER bb__parsepwent
231 #define GETXXKEY_R_ENTTYPE struct passwd
232 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->pw_name, key))
233 #define GETXXKEY_R_KEYTYPE const char *__restrict
234 #define GETXXKEY_R_PATHNAME _PATH_PASSWD
235 #include "pwd_grp_internal.c"
237 #define GETXXKEY_R_FUNC getgrnam_r
238 #define GETXXKEY_R_PARSER bb__parsegrent
239 #define GETXXKEY_R_ENTTYPE struct group
240 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->gr_name, key))
241 #define GETXXKEY_R_KEYTYPE const char *__restrict
242 #define GETXXKEY_R_PATHNAME _PATH_GROUP
243 #include "pwd_grp_internal.c"
245 #if ENABLE_USE_BB_SHADOW
246 #define GETXXKEY_R_FUNC getspnam_r
247 #define GETXXKEY_R_PARSER bb__parsespent
248 #define GETXXKEY_R_ENTTYPE struct spwd
249 #define GETXXKEY_R_TEST(ENT) (!strcmp((ENT)->sp_namp, key))
250 #define GETXXKEY_R_KEYTYPE const char *__restrict
251 #define GETXXKEY_R_PATHNAME _PATH_SHADOW
252 #include "pwd_grp_internal.c"
255 #define GETXXKEY_R_FUNC getpwuid_r
256 #define GETXXKEY_R_PARSER bb__parsepwent
257 #define GETXXKEY_R_ENTTYPE struct passwd
258 #define GETXXKEY_R_TEST(ENT) ((ENT)->pw_uid == key)
259 #define GETXXKEY_R_KEYTYPE uid_t
260 #define GETXXKEY_R_PATHNAME _PATH_PASSWD
261 #include "pwd_grp_internal.c"
263 #define GETXXKEY_R_FUNC getgrgid_r
264 #define GETXXKEY_R_PARSER bb__parsegrent
265 #define GETXXKEY_R_ENTTYPE struct group
266 #define GETXXKEY_R_TEST(ENT) ((ENT)->gr_gid == key)
267 #define GETXXKEY_R_KEYTYPE gid_t
268 #define GETXXKEY_R_PATHNAME _PATH_GROUP
269 #include "pwd_grp_internal.c"
271 /**********************************************************************/
272 /* TODO: audit & stop using these in bbox, they pull in static buffers */
274 /* This one has many users */
275 struct passwd
*getpwuid(uid_t uid
)
278 struct passwd
*resultbuf
= RESULTBUF(getpw
);
279 char *buffer
= BUFFER(getpw
);
280 struct passwd
*result
;
282 getpwuid_r(uid
, resultbuf
, buffer
, sizeof(BUFFER(getpw
)), &result
);
286 /* This one has many users */
287 struct group
*getgrgid(gid_t gid
)
290 struct group
*resultbuf
= RESULTBUF(getgr
);
291 char *buffer
= BUFFER(getgr
);
292 struct group
*result
;
294 getgrgid_r(gid
, resultbuf
, buffer
, sizeof(BUFFER(getgr
)), &result
);
298 #if 0 //ENABLE_USE_BB_SHADOW
299 /* This function is non-standard and is currently not built. It seems
300 * to have been created as a reentrant version of the non-standard
301 * functions getspuid. Why getspuid was added, I do not know. */
302 int getspuid_r(uid_t uid
, struct spwd
*__restrict resultbuf
,
303 char *__restrict buffer
, size_t buflen
,
304 struct spwd
**__restrict result
)
308 struct passwd password
;
309 char pwd_buff
[PWD_BUFFER_SIZE
];
312 rv
= getpwuid_r(uid
, &password
, pwd_buff
, sizeof(pwd_buff
), &pp
);
314 rv
= getspnam_r(password
.pw_name
, resultbuf
, buffer
, buflen
, result
);
320 /* This function is non-standard and is currently not built.
321 * Why it was added, I do not know. */
322 struct spwd
*getspuid(uid_t uid
)
325 struct spwd
*resultbuf
= RESULTBUF(getsp
);
326 char *buffer
= BUFFER(getsp
);
329 getspuid_r(uid
, resultbuf
, buffer
, sizeof(BUFFER(getsp
)), &result
);
334 /* This one has many users */
335 struct passwd
*getpwnam(const char *name
)
338 struct passwd
*resultbuf
= RESULTBUF(getpw
);
339 char *buffer
= BUFFER(getpw
);
340 struct passwd
*result
;
342 getpwnam_r(name
, resultbuf
, buffer
, sizeof(BUFFER(getpw
)), &result
);
346 /* This one has many users */
347 struct group
*getgrnam(const char *name
)
350 struct group
*resultbuf
= RESULTBUF(getgr
);
351 char *buffer
= BUFFER(getgr
);
352 struct group
*result
;
354 getgrnam_r(name
, resultbuf
, buffer
, sizeof(BUFFER(getgr
)), &result
);
358 #if 0 //ENABLE_USE_BB_SHADOW
359 struct spwd
*getspnam(const char *name
)
362 struct spwd
*resultbuf
= RESULTBUF(getsp
);
363 char *buffer
= BUFFER(getsp
);
366 getspnam_r(name
, resultbuf
, buffer
, sizeof(BUFFER(getsp
)), &result
);
371 /**********************************************************************/
373 /* FIXME: we don't have such CONFIG_xx - ?! */
375 #if defined CONFIG_USE_BB_THREADSAFE_SHADOW && defined PTHREAD_MUTEX_INITIALIZER
376 static pthread_mutex_t mylock
= PTHREAD_MUTEX_INITIALIZER
;
377 # define LOCK pthread_mutex_lock(&mylock)
378 # define UNLOCK pthread_mutex_unlock(&mylock);
380 # define LOCK ((void) 0)
381 # define UNLOCK ((void) 0)
384 static FILE *pwf
/*= NULL*/;
405 int getpwent_r(struct passwd
*__restrict resultbuf
,
406 char *__restrict buffer
, size_t buflen
,
407 struct passwd
**__restrict result
)
412 *result
= NULL
; /* In case of error... */
415 pwf
= fopen_for_read(_PATH_PASSWD
);
420 close_on_exec_on(fileno(pwf
));
423 rv
= bb__pgsreader(bb__parsepwent
, resultbuf
, buffer
, buflen
, pwf
);
433 static FILE *grf
/*= NULL*/;
453 int getgrent_r(struct group
*__restrict resultbuf
,
454 char *__restrict buffer
, size_t buflen
,
455 struct group
**__restrict result
)
460 *result
= NULL
; /* In case of error... */
463 grf
= fopen_for_read(_PATH_GROUP
);
468 close_on_exec_on(fileno(grf
));
471 rv
= bb__pgsreader(bb__parsegrent
, resultbuf
, buffer
, buflen
, grf
);
481 #ifdef UNUSED_FOR_NOW
482 #if ENABLE_USE_BB_SHADOW
483 static FILE *spf
/*= NULL*/;
503 int getspent_r(struct spwd
*resultbuf
, char *buffer
,
504 size_t buflen
, struct spwd
**result
)
509 *result
= NULL
; /* In case of error... */
512 spf
= fopen_for_read(_PATH_SHADOW
);
517 close_on_exec_on(fileno(spf
));
520 rv
= bb__pgsreader(bb__parsespent
, resultbuf
, buffer
, buflen
, spf
);
530 #endif /* UNUSED_FOR_NOW */
532 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
533 struct passwd
*getpwent(void)
535 static char line_buff
[PWD_BUFFER_SIZE
];
536 static struct passwd pwd
;
537 struct passwd
*result
;
539 getpwent_r(&pwd
, line_buff
, sizeof(line_buff
), &result
);
543 struct group
*getgrent(void)
545 static char line_buff
[GRP_BUFFER_SIZE
];
546 static struct group gr
;
547 struct group
*result
;
549 getgrent_r(&gr
, line_buff
, sizeof(line_buff
), &result
);
553 #if ENABLE_USE_BB_SHADOW
554 struct spwd
*getspent(void)
556 static char line_buff
[PWD_BUFFER_SIZE
];
557 static struct spwd spwd
;
560 getspent_r(&spwd
, line_buff
, sizeof(line_buff
), &result
);
564 struct spwd
*sgetspent(const char *string
)
566 static char line_buff
[PWD_BUFFER_SIZE
];
567 static struct spwd spwd
;
570 sgetspent_r(string
, &spwd
, line_buff
, sizeof(line_buff
), &result
);
574 #endif /* UNUSED_SINCE_WE_AVOID_STATIC_BUFS */
576 static gid_t
*getgrouplist_internal(int *ngroups_ptr
, const char *user
, gid_t gid
)
582 char buff
[PWD_BUFFER_SIZE
];
584 /* We alloc space for 8 gids at a time. */
585 group_list
= xmalloc(8 * sizeof(group_list
[0]));
589 grfile
= fopen_for_read(_PATH_GROUP
);
591 while (!bb__pgsreader(bb__parsegrent
, &group
, buff
, sizeof(buff
), grfile
)) {
593 assert(group
.gr_mem
); /* Must have at least a NULL terminator. */
594 if (group
.gr_gid
== gid
)
596 for (m
= group
.gr_mem
; *m
; m
++) {
597 if (strcmp(*m
, user
) != 0)
599 group_list
= xrealloc_vector(group_list
, /*8=2^3:*/ 3, ngroups
);
600 group_list
[ngroups
++] = group
.gr_gid
;
606 *ngroups_ptr
= ngroups
;
610 int initgroups(const char *user
, gid_t gid
)
613 gid_t
*group_list
= getgrouplist_internal(&ngroups
, user
, gid
);
615 ngroups
= setgroups(ngroups
, group_list
);
620 int getgrouplist(const char *user
, gid_t gid
, gid_t
*groups
, int *ngroups
)
622 int ngroups_old
= *ngroups
;
623 gid_t
*group_list
= getgrouplist_internal(ngroups
, user
, gid
);
625 if (*ngroups
<= ngroups_old
) {
626 ngroups_old
= *ngroups
;
627 memcpy(groups
, group_list
, ngroups_old
* sizeof(groups
[0]));
635 #ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
636 int putpwent(const struct passwd
*__restrict p
, FILE *__restrict f
)
641 /* glibc does this check */
648 /* No extra thread locking is needed above what fprintf does. */
649 if (fprintf(f
, "%s:%s:%lu:%lu:%s:%s:%s\n",
650 p
->pw_name
, p
->pw_passwd
,
651 (unsigned long)(p
->pw_uid
),
652 (unsigned long)(p
->pw_gid
),
653 p
->pw_gecos
, p
->pw_dir
, p
->pw_shell
) >= 0
661 int putgrent(const struct group
*__restrict p
, FILE *__restrict f
)
666 /* glibc does this check */
673 if (fprintf(f
, "%s:%s:%lu:",
674 p
->gr_name
, p
->gr_passwd
,
675 (unsigned long)(p
->gr_gid
)) >= 0
677 static const char format
[] ALIGN1
= ",%s";
689 if (fputc('\n', f
) >= 0) {
694 if (fprintf(f
, fmt
, *m
) < 0) {
706 #if ENABLE_USE_BB_SHADOW
707 #ifdef UNUSED_FOR_NOW
708 static const unsigned char put_sp_off
[] ALIGN1
= {
709 offsetof(struct spwd
, sp_lstchg
), /* 2 - not a char ptr */
710 offsetof(struct spwd
, sp_min
), /* 3 - not a char ptr */
711 offsetof(struct spwd
, sp_max
), /* 4 - not a char ptr */
712 offsetof(struct spwd
, sp_warn
), /* 5 - not a char ptr */
713 offsetof(struct spwd
, sp_inact
), /* 6 - not a char ptr */
714 offsetof(struct spwd
, sp_expire
) /* 7 - not a char ptr */
717 int putspent(const struct spwd
*p
, FILE *stream
)
724 /* Unlike putpwent and putgrent, glibc does not check the args. */
725 if (fprintf(stream
, "%s:%s:", p
->sp_namp
,
726 (p
->sp_pwdp
? p
->sp_pwdp
: "")) < 0
731 for (i
= 0; i
< sizeof(put_sp_off
); i
++) {
733 x
= *(long *)((char *)p
+ put_sp_off
[i
]);
737 if (fprintf(stream
, fmt
, x
) < 0) {
742 if ((p
->sp_flag
!= ~0UL) && (fprintf(stream
, "%lu", p
->sp_flag
) < 0)) {
746 if (fputc('\n', stream
) > 0) {
754 #endif /* USE_BB_SHADOW */
756 /**********************************************************************/
757 /* Internal functions */
758 /**********************************************************************/
760 static const unsigned char pw_off
[] ALIGN1
= {
761 offsetof(struct passwd
, pw_name
), /* 0 */
762 offsetof(struct passwd
, pw_passwd
), /* 1 */
763 offsetof(struct passwd
, pw_uid
), /* 2 - not a char ptr */
764 offsetof(struct passwd
, pw_gid
), /* 3 - not a char ptr */
765 offsetof(struct passwd
, pw_gecos
), /* 4 */
766 offsetof(struct passwd
, pw_dir
), /* 5 */
767 offsetof(struct passwd
, pw_shell
) /* 6 */
770 static int FAST_FUNC
bb__parsepwent(void *data
, char *line
)
778 p
= (char *) data
+ pw_off
[i
];
780 if (i
< 2 || i
> 3) {
781 *((char **) p
) = line
;
785 /* NOTE: glibc difference - glibc allows omission of
786 * ':' seperators after the gid field if all remaining
787 * entries are empty. We require all separators. */
788 line
= strchr(line
, ':');
793 unsigned long t
= strtoul(line
, &endptr
, 10);
794 /* Make sure we had at least one digit, and that the
795 * failing char is the next field seperator ':'. See
796 * glibc difference note above. */
797 /* TODO: Also check for leading whitespace? */
798 if ((endptr
== line
) || (*endptr
!= ':')) {
802 if (i
& 1) { /* i == 3 -- gid */
804 } else { /* i == 2 -- uid */
816 /**********************************************************************/
818 static const unsigned char gr_off
[] ALIGN1
= {
819 offsetof(struct group
, gr_name
), /* 0 */
820 offsetof(struct group
, gr_passwd
), /* 1 */
821 offsetof(struct group
, gr_gid
) /* 2 - not a char ptr */
824 static int FAST_FUNC
bb__parsegrent(void *data
, char *line
)
832 end_of_buf
= ((struct group
*) data
)->gr_name
; /* Evil hack! */
835 p
= (char *) data
+ gr_off
[i
];
838 *((char **) p
) = line
;
839 line
= strchr(line
, ':');
846 *((gid_t
*) p
) = strtoul(line
, &endptr
, 10);
848 /* NOTE: glibc difference - glibc allows omission of the
849 * trailing colon when there is no member list. We treat
850 * this as an error. */
852 /* Make sure we had at least one digit, and that the
853 * failing char is the next field seperator ':'. See
854 * glibc difference note above. */
855 if ((endptr
== line
) || (*endptr
!= ':')) {
859 i
= 1; /* Count terminating NULL ptr. */
862 if (p
[1]) { /* We have a member list to process. */
863 /* Overwrite the last ':' with a ',' before counting.
864 * This allows us to (1) test for initial ','
865 * and (2) adds one ',' so that the number of commas
866 * equals the member count. */
869 /* NOTE: glibc difference - glibc allows and trims leading
870 * (but not trailing) space. We treat this as an error. */
871 /* NOTE: glibc difference - glibc allows consecutive and
872 * trailing commas, and ignores "empty string" users. We
873 * treat this as an error. */
876 *p
= 0; /* nul-terminate each member string. */
877 if (!*++p
|| (*p
== ',') || isspace(*p
)) {
884 /* Now align (p+1), rounding up. */
885 /* Assumes sizeof(char **) is a power of 2. */
886 members
= (char **)( (((intptr_t) p
) + sizeof(char **))
887 & ~((intptr_t)(sizeof(char **) - 1)) );
889 if (((char *)(members
+ i
)) > end_of_buf
) { /* No space. */
893 ((struct group
*) data
)->gr_mem
= members
;
896 p
= endptr
; /* Pointing to char prior to first member. */
915 /**********************************************************************/
917 #if ENABLE_USE_BB_SHADOW
918 static const unsigned char sp_off
[] ALIGN1
= {
919 offsetof(struct spwd
, sp_namp
), /* 0: char* */
920 offsetof(struct spwd
, sp_pwdp
), /* 1: char* */
921 offsetof(struct spwd
, sp_lstchg
), /* 2: long */
922 offsetof(struct spwd
, sp_min
), /* 3: long */
923 offsetof(struct spwd
, sp_max
), /* 4: long */
924 offsetof(struct spwd
, sp_warn
), /* 5: long */
925 offsetof(struct spwd
, sp_inact
), /* 6: long */
926 offsetof(struct spwd
, sp_expire
), /* 7: long */
927 offsetof(struct spwd
, sp_flag
) /* 8: unsigned long */
930 static int FAST_FUNC
bb__parsespent(void *data
, char *line
)
938 p
= (char *) data
+ sp_off
[i
];
940 *((char **) p
) = line
;
941 line
= strchr(line
, ':');
946 *((long *) p
) = strtoul(line
, &endptr
, 10);
947 if (endptr
== line
) {
955 return 0; /* all ok */
969 /**********************************************************************/
971 /* Reads until EOF, or until it finds a line which fits in the buffer
972 * and for which the parser function succeeds.
974 * Returns 0 on success and ENOENT for end-of-file (glibc convention).
976 static int bb__pgsreader(
977 int FAST_FUNC (*parserfunc
)(void *d
, char *line
),
979 char *__restrict line_buff
,
986 if (buflen
< PWD_BUFFER_SIZE
) {
993 if (!fgets(line_buff
, buflen
, f
)) {
1001 int line_len
= strlen(line_buff
) - 1;
1002 if (line_len
>= 0 && line_buff
[line_len
] == '\n') {
1003 line_buff
[line_len
] = '\0';
1005 if (line_len
+ 2 == buflen
) {
1006 /* A start (or continuation) of overlong line */
1009 } /* else: a last line in the file, and it has no '\n' */
1013 /* This "line" is a remainder of overlong line, ignore */
1018 /* NOTE: glibc difference - glibc strips leading whitespace from
1019 * records. We do not allow leading whitespace. */
1021 /* Skip empty lines, comment lines, and lines with leading
1023 if (line_buff
[0] != '\0' && line_buff
[0] != '#' && !isspace(line_buff
[0])) {
1024 if (parserfunc
== bb__parsegrent
) {
1025 /* Do evil group hack:
1026 * The group entry parsing function needs to know where
1027 * the end of the buffer is so that it can construct the
1028 * group member ptr table. */
1029 ((struct group
*) data
)->gr_name
= line_buff
+ buflen
;
1031 if (parserfunc(data
, line_buff
) == 0) {