3 #include <sys/dirent.h>
12 #include <sys/sysctl.h>
13 #include <sys/utsname.h>
20 #include <nestedvm/socket.h>
22 int _syscall_set_errno(struct _reent *ptr, int err) {
27 #define REENT_WRAPPER0R(f,rt) \
28 extern rt _##f##_r(struct _reent *ptr); \
29 rt f() { return _##f##_r(_REENT); }
30 #define REENT_WRAPPER0(f) REENT_WRAPPER0R(f,int)
32 #define REENT_WRAPPER1R(f,rt,t1) \
33 extern rt _##f##_r(struct _reent *ptr, t1 a); \
34 rt f(t1 a) { return _##f##_r(_REENT,a); }
35 #define REENT_WRAPPER1(f,t1) REENT_WRAPPER1R(f,int,t1)
37 #define REENT_WRAPPER2R(f,rt,t1,t2) \
38 extern rt _##f##_r(struct _reent *ptr, t1 a, t2 b); \
39 rt f(t1 a, t2 b) { return _##f##_r(_REENT,a,b); }
40 #define REENT_WRAPPER2(f,t1,t2) REENT_WRAPPER2R(f,int,t1,t2)
42 #define REENT_WRAPPER3R(f,rt,t1,t2,t3) \
43 extern rt _##f##_r(struct _reent *ptr, t1 a, t2 b, t3 c); \
44 rt f(t1 a, t2 b, t3 c) { return _##f##_r(_REENT,a,b,c); }
45 #define REENT_WRAPPER3(f,t1,t2,t3) REENT_WRAPPER3R(f,int,t1,t2,t3)
47 #define REENT_WRAPPER4R(f,rt,t1,t2,t3,t4) \
48 extern rt _##f##_r(struct _reent *ptr, t1 a, t2 b, t3 c, t4 d); \
49 rt f(t1 a, t2 b, t3 c, t4 d) { return _##f##_r(_REENT,a,b,c,d); }
50 #define REENT_WRAPPER4(f,t1,t2,t3,t4) REENT_WRAPPER4R(f,int,t1,t2,t3,t4)
52 #define REENT_WRAPPER5R(f,rt,t1,t2,t3,t4,t5) \
53 extern rt _##f##_r(struct _reent *ptr, t1 a, t2 b, t3 c, t4 d, t5 e); \
54 rt f(t1 a, t2 b, t3 c, t4 d, t5 e) { return _##f##_r(_REENT,a,b,c,d,e); }
55 #define REENT_WRAPPER5(f,t1,t2,t3,t4,t5) REENT_WRAPPER5R(f,int,t1,t2,t3,t4,t5)
57 #define REENT_WRAPPER6R(f,rt,t1,t2,t3,t4,t5,t6) \
58 extern rt _##f##_r(struct _reent *ptr, t1 a, t2 b, t3 c, t4 d, t5 e, t6 f); \
59 rt f(t1 a, t2 b, t3 c, t4 d, t5 e, t6 f) { return _##f##_r(_REENT,a,b,c,d,e,f); }
60 #define REENT_WRAPPER6(f,t1,t2,t3,t4,t5,t6) REENT_WRAPPER6R(f,int,t1,t2,t3,t4,t5,t6)
62 REENT_WRAPPER2(mkdir,const char *,mode_t)
63 REENT_WRAPPER2(access,const char *,int)
64 REENT_WRAPPER1(rmdir,const char *)
65 REENT_WRAPPER1R(sysconf,long,int)
66 REENT_WRAPPER1(chdir,const char*)
67 REENT_WRAPPER2(utime,const char *,const struct utimbuf *)
68 REENT_WRAPPER1(pipe,int *)
69 REENT_WRAPPER2(dup2,int,int)
70 REENT_WRAPPER3(waitpid,pid_t,int *,int)
71 REENT_WRAPPER2R(getcwd,char *,char *,size_t)
72 REENT_WRAPPER2R(_getcwd,char *,char *,size_t)
73 REENT_WRAPPER2(symlink,const char *,const char *)
74 REENT_WRAPPER3(readlink,const char *, char *,int)
75 REENT_WRAPPER3(chown,const char *,uid_t,gid_t)
76 REENT_WRAPPER3(fchown,int,uid_t,gid_t)
77 REENT_WRAPPER3(lchown,const char *,uid_t,gid_t)
78 REENT_WRAPPER2(chmod,const char *,mode_t)
79 REENT_WRAPPER2(fchmod,int,mode_t)
80 REENT_WRAPPER2(lstat,const char *,struct stat *)
81 REENT_WRAPPER4(getdents,int, char *, size_t,long *)
82 REENT_WRAPPER1(dup,int)
83 REENT_WRAPPER2R(pathconf,long,const char *,int)
85 REENT_WRAPPER1(chroot,const char *)
86 REENT_WRAPPER3(mknod,const char *,mode_t,dev_t)
87 REENT_WRAPPER2(ftruncate,int,off_t)
88 REENT_WRAPPER1(usleep,unsigned int)
89 REENT_WRAPPER2(mkfifo,const char *, mode_t)
90 REENT_WRAPPER3(klogctl,int,char*,int)
91 REENT_WRAPPER2R(realpath,char *,const char *,char *)
92 REENT_WRAPPER6(_sysctl,int *,int, void *, size_t*, void *, size_t)
93 REENT_WRAPPER6(sysctl,int *, int, void *, size_t*, void *, size_t)
94 REENT_WRAPPER2(getpriority,int,int)
95 REENT_WRAPPER3(setpriority,int,int,int)
96 REENT_WRAPPER3(connect,int,const struct sockaddr *,socklen_t)
97 REENT_WRAPPER3(socket,int,int,int)
98 REENT_WRAPPER3(_resolve_hostname,const char *,char*,size_t*)
99 REENT_WRAPPER3(_resolve_ip,int,char*,size_t)
100 REENT_WRAPPER3(accept,int,struct sockaddr *,socklen_t*)
101 REENT_WRAPPER5(getsockopt,int,int,int,void*,socklen_t*)
102 REENT_WRAPPER5(setsockopt,int,int,int,const void*,socklen_t)
103 REENT_WRAPPER3(bind,int,const struct sockaddr *,socklen_t)
104 REENT_WRAPPER2(listen,int,int)
105 REENT_WRAPPER2(shutdown,int,int)
106 REENT_WRAPPER6(sendto,int,const void*,size_t,int,const struct sockaddr*,socklen_t)
107 REENT_WRAPPER6(recvfrom,int,void*,size_t,int,struct sockaddr*,socklen_t*)
108 REENT_WRAPPER5(select,int,fd_set*,fd_set*,fd_set*,struct timeval*)
109 REENT_WRAPPER4(send,int,const void*,size_t,int)
110 REENT_WRAPPER4(recv,int,void*,size_t,int)
111 REENT_WRAPPER2(getgroups,int,gid_t*)
112 REENT_WRAPPER3(getsockname,int,struct sockaddr*,int*)
113 REENT_WRAPPER3(getpeername,int,struct sockaddr*,int*)
114 REENT_WRAPPER1(setuid,uid_t)
115 REENT_WRAPPER1(seteuid,uid_t)
116 REENT_WRAPPER1(setgid,gid_t)
117 REENT_WRAPPER1(setegid,gid_t)
118 REENT_WRAPPER2(setgroups,int,const gid_t *)
119 REENT_WRAPPER0R(setsid,pid_t)
121 extern int __execve_r(struct _reent *ptr, const char *path, char *const argv[], char *const envp[]);
122 int _execve(const char *path, char *const argv[], char *const envp[]) {
123 return __execve_r(_REENT,path,argv,envp);
126 char *_getcwd_r(struct _reent *ptr, char *buf, size_t size) {
128 buf = __getcwd_r(ptr,buf,size);
129 return (long)buf == -1 ? NULL : buf;
135 char *ret = __getcwd_r(ptr,buf,size);
136 if((long)ret != -1) return ret;
139 if(ptr->_errno != ERANGE) return NULL;
143 pid_t _wait_r(struct _reent *ptr, int *status) {
144 return _waitpid_r(ptr,-1,status,0);
147 long _pathconf_r(struct _reent *ptr,const char *path, int name) {
150 fprintf(stderr,"WARNING: pathconf: Unknown \"name\": %d\n",name);
151 ptr->_errno = EINVAL;
156 int _sysctl_r(struct _reent *ptr, int *name, int namelen, void *oldp, size_t *oldlen, void *newp, size_t newlen) {
157 if(name[0] != CTL_USER) return _sysctl(name,namelen,oldp,oldlen,newp,newlen);
158 if(newp != NULL) { ptr->_errno = EPERM; return -1; }
159 if(namelen != 2) { ptr->_errno = EINVAL; return -1; }
163 fprintf(stderr,"WARNING: sysctl: Unknown name: %d\n",name[1]);
164 ptr->_errno = EINVAL;
178 char *ttyname(int fd) {
179 return isatty(fd) ? "/dev/console" : NULL;
182 int sigaction(int sig, const struct sigaction *act, struct sigaction *oact) {
186 if(act->sa_flags || act->sa_mask != ~((sigset_t)0)) { errno = EINVAL; return -1; }
187 old = signal(sig,act->sa_handler);
189 old = signal(sig,SIG_DFL);
193 oact->sa_handler = old;
195 oact->sa_mask = ~((sigset_t)0);
200 DIR *opendir(const char *path) {
205 fd = open(path,O_RDONLY);
206 if(fd < 0) return NULL;
208 if(fstat(fd,&sb) < 0 || !S_ISDIR(sb.st_mode)) {
214 dir = malloc(sizeof(*dir));
221 dir->dd_buf = malloc(sizeof(struct dirent));
222 dir->dd_size = sizeof(struct dirent);
223 if(dir->dd_buf == NULL) {
233 struct dirent *readdir(DIR *dir) {
236 if(dir->dd_loc == 0 || dir->dd_loc == dir->dd_len) {
237 dir->dd_len = getdents(dir->dd_fd,dir->dd_buf,dir->dd_size,NULL);
239 if(dir->dd_len <= 0) { dir->dd_len = 0; return NULL; }
241 dp = (struct dirent*) (dir->dd_buf + dir->dd_loc);
242 if(dp->d_reclen == 0 || dp->d_reclen > dir->dd_len - dir->dd_loc) return NULL;
243 dir->dd_loc += dp->d_reclen;
247 int closedir(DIR *dir) {
255 * Networking/Socket stuff
258 /* This should really be part of the newlib _reent structure */
261 char *inet_ntoa(struct in_addr in) {
263 const unsigned char *p = (void*) ∈
264 snprintf(buf,sizeof(buf),"%u.%u.%u.%u",p[0],p[1],p[2],p[3]);
268 struct servent *getservbyname(const char *name,const char *proto) {
272 static const char *h_errlist[] = { "No Error","Unknown host", "Host name lookup failure","Unknown server error","No address associated with name" };
274 const char *hstrerror(int err) {
275 if(err < 0 || err > 4) return "Unknown Error";
276 return h_errlist[err];
279 void herror(const char *string) {
280 fprintf(stderr,"%s: %s\n",string,hstrerror(h_errno));
283 extern int _resolve_ip(int addr, char *buf, size_t size);
285 struct hostent *gethostbyaddr(const char *addr, int len, int type) {
286 static struct hostent hostent;
287 static char name[128];
288 static char *aliases[1];
289 static char *addr_list[1];
290 static char addr_list_buf[4];
293 if(type != AF_INET || len != 4) return NULL;
295 memcpy(addr_list_buf,addr,4);
296 err = _resolve_ip(i,name,sizeof(name));
297 if(err != 0) { h_errno = err; return NULL; }
299 hostent.h_name = name;
300 hostent.h_aliases = aliases;
302 hostent.h_addrtype = AF_INET;
303 hostent.h_length = sizeof(struct in_addr);
304 hostent.h_addr_list = addr_list;
305 addr_list[0] = addr_list_buf;
310 extern int _resolve_hostname(const char *, char *buf, size_t *size);
312 struct hostent *gethostbyname(const char *hostname) {
313 #define MAX_ADDRS 256
314 static struct hostent hostent;
315 static char saved_hostname[128];
316 static char *addr_list[MAX_ADDRS+1];
317 static char addr_list_buf[MAX_ADDRS*sizeof(struct in_addr)];
318 static char *aliases[1];
320 unsigned char buf[MAX_ADDRS*sizeof(struct in_addr)];
321 size_t size = sizeof(buf);
324 err = _resolve_hostname(hostname,buf,&size);
325 if(err != 0) { h_errno = err; return NULL; }
327 memcpy(addr_list_buf,buf,size);
328 for(i=0;i<size;i += sizeof(struct in_addr)) addr_list[n++] = &addr_list_buf[i];
330 strncpy(saved_hostname,hostname,sizeof(saved_hostname));
333 hostent.h_name = saved_hostname;
334 hostent.h_aliases = aliases;
335 hostent.h_addrtype = AF_INET;
336 hostent.h_length = sizeof(struct in_addr);
337 hostent.h_addr_list = addr_list;
342 static struct passwd pw_passwd;
343 static struct group gr_group;
344 static FILE *passwd_fp;
345 static FILE *group_fp;
346 static char pw_name[1024];
347 static char pw_password[1024];
348 static char pw_gecos[1024];
349 static char pw_dir[1024];
350 static char pw_shell[1024];
351 static char gr_name[1024];
352 static char gr_passwd[1024];
353 static char *gr_mem[1];
355 static int gr_parse_body(const char *buf) {
356 if(sscanf(buf,"%[^:]:%[^:]:%hu",gr_name,gr_passwd,&gr_group.gr_gid) < 3) return -1;
357 gr_group.gr_name = gr_name;
358 gr_group.gr_passwd = gr_passwd;
359 gr_group.gr_mem = gr_mem;
364 static int pw_parse_body(const char *buf) {
366 if(sscanf(buf,"%[^:]:%[^:]:%d:%d:%[^:]:%[^:]:%s\n",pw_name,pw_password,&pw_passwd.pw_uid,&pw_passwd.pw_gid,pw_gecos,pw_dir,pw_shell) < 7) return -1;
367 pw_passwd.pw_name = pw_name;
368 pw_passwd.pw_passwd = pw_password;
369 pw_passwd.pw_gecos = pw_gecos;
370 pw_passwd.pw_dir = pw_dir;
371 pw_passwd.pw_shell = pw_shell;
372 pw_passwd.pw_comment = "";
376 struct group *getgrnam(const char *name) {
380 if((fp=fopen("/etc/group","r"))==NULL) return NULL;
381 while(fgets(buf,sizeof(buf),fp)) {
382 if(buf[0] == '#') continue;
383 if(gr_parse_body(buf) < 0) {
387 if(strcmp(name,gr_name)==0) {
396 struct group *getgrgid(gid_t gid) {
400 if((fp=fopen("/etc/group","r"))==NULL) return NULL;
401 while(fgets(buf,sizeof(buf),fp)) {
402 if(buf[0] == '#') continue;
403 if(gr_parse_body(buf) < 0) {
407 if(gid == gr_group.gr_gid) {
416 struct group *getgrent() {
418 if(group_fp == NULL) return NULL;
419 if(fgets(buf,sizeof(buf),group_fp) == NULL) return NULL;
420 if(buf[0] == '#') return getgrent();
421 if(gr_parse_body(buf) < 0) return NULL;
426 if(group_fp != NULL) fclose(group_fp);
427 group_fp = fopen("/etc/group","r");
431 if(group_fp != NULL) fclose(group_fp);
435 struct passwd *getpwnam(const char *name) {
439 if((fp=fopen("/etc/passwd","r"))==NULL) return NULL;
440 while(fgets(buf,sizeof(buf),fp)) {
441 if(buf[0] == '#') continue;
442 if(pw_parse_body(buf) < 0) {
446 if(strcmp(name,pw_name)==0) {
455 struct passwd *getpwuid(uid_t uid) {
459 if((fp=fopen("/etc/passwd","r"))==NULL) return NULL;
460 while(fgets(buf,sizeof(buf),fp)) {
461 if(buf[0] == '#') continue;
462 if(pw_parse_body(buf) < 0) {
466 if(uid == pw_passwd.pw_uid) {
475 struct passwd *getpwent() {
477 if(passwd_fp == NULL) return NULL;
478 if(fgets(buf,sizeof(buf),passwd_fp) == NULL) return NULL;
479 if(buf[0] == '#') return getpwent();
480 if(pw_parse_body(buf) < 0) return NULL;
485 if(passwd_fp != NULL) fclose(passwd_fp);
486 passwd_fp = fopen("/etc/group","r");
490 if(passwd_fp != NULL) fclose(passwd_fp);
494 char *getpass(const char *prompt) {
495 static char buf[1024];
497 fputs(prompt,stderr);
499 if(fgets(buf,sizeof(buf),stdin)!=NULL) {
501 if(buf[len-1] == '\n') len--;
508 /* Argh... newlib's asprintf is totally broken... */
509 int vasprintf(char **ret, const char *fmt, va_list ap) {
512 *ret = malloc(128); /* just guess for now */
514 n = vsnprintf(*ret,128,fmt,ap);
518 p = realloc(*ret,n+1);
519 if(!p) { free(*ret); return -1; }
520 return vsprintf(*ret = p,fmt,ap);
526 * Other People's Code
529 /* FreeBSD's dirname/basename */
531 /* FIXME: Put these in a header */
534 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
535 * All rights reserved.
537 * Redistribution and use in source and binary forms, with or without
538 * modification, are permitted provided that the following conditions
540 * 1. Redistributions of source code must retain the above copyright
541 * notice, this list of conditions and the following disclaimer.
542 * 2. Redistributions in binary form must reproduce the above copyright
543 * notice, this list of conditions and the following disclaimer in the
544 * documentation and/or other materials provided with the distribution.
545 * 3. The name of the author may not be used to endorse or promote products
546 * derived from this software without specific prior written permission.
548 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
549 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
550 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
551 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
552 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
553 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
554 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
555 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
556 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
557 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
564 static char bname[MAXPATHLEN];
565 register const char *endp;
567 /* Empty or NULL string gets treated as "." */
568 if (path == NULL || *path == '\0') {
569 (void)strcpy(bname, ".");
573 /* Strip trailing slashes */
574 endp = path + strlen(path) - 1;
575 while (endp > path && *endp == '/')
578 /* Find the start of the dir */
579 while (endp > path && *endp != '/')
582 /* Either the dir is "/" or there are no slashes */
584 (void)strcpy(bname, *endp == '/' ? "/" : ".");
589 } while (endp > path && *endp == '/');
592 if (endp - path + 2 > sizeof(bname)) {
593 errno = ENAMETOOLONG;
596 (void)strncpy(bname, path, endp - path + 1);
597 bname[endp - path + 1] = '\0';
605 static char bname[MAXPATHLEN];
606 register const char *endp, *startp;
608 /* Empty or NULL string gets treated as "." */
609 if (path == NULL || *path == '\0') {
610 (void)strcpy(bname, ".");
614 /* Strip trailing slashes */
615 endp = path + strlen(path) - 1;
616 while (endp > path && *endp == '/')
619 /* All slashes becomes "/" */
620 if (endp == path && *endp == '/') {
621 (void)strcpy(bname, "/");
625 /* Find the start of the base */
627 while (startp > path && *(startp - 1) != '/')
630 if (endp - startp + 2 > sizeof(bname)) {
631 errno = ENAMETOOLONG;
634 (void)strncpy(bname, startp, endp - startp + 1);
635 bname[endp - startp + 1] = '\0';
639 /* FreeBSD's uname */
642 struct utsname *name;
652 mib[1] = KERN_OSTYPE;
653 len = sizeof(name->sysname);
655 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) {
661 name->sysname[sizeof(name->sysname) - 1] = '\0';
664 mib[1] = KERN_HOSTNAME;
665 len = sizeof(name->nodename);
667 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) {
673 name->nodename[sizeof(name->nodename) - 1] = '\0';
676 mib[1] = KERN_OSRELEASE;
677 len = sizeof(name->release);
679 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) {
685 name->release[sizeof(name->release) - 1] = '\0';
687 /* The version may have newlines in it, turn them into spaces. */
689 mib[1] = KERN_VERSION;
690 len = sizeof(name->version);
692 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
698 name->version[sizeof(name->version) - 1] = '\0';
699 for (p = name->version; len--; ++p) {
700 if (*p == '\n' || *p == '\t') {
710 len = sizeof(name->machine);
712 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) {
718 name->machine[sizeof(name->machine) - 1] = '\0';
722 /* FreeBSD's gethostname */
724 gethostname(name, namelen)
732 mib[1] = KERN_HOSTNAME;
734 if (sysctl(mib, 2, name, &size, NULL, 0) == -1)
739 /* FreeBSD's daemon() - modified for nestedvm */
741 daemon(nochdir, noclose)
742 int nochdir, noclose;
761 if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
762 (void)dup2(fd, STDIN_FILENO);
763 (void)dup2(fd, STDOUT_FILENO);
764 (void)dup2(fd, STDERR_FILENO);
771 /* FreeBSD's inet_addr/inet_aton */
774 * Check whether "cp" is a valid ASCII representation
775 * of an Internet address and convert to a binary address.
776 * Returns 1 if the address is valid, 0 if not.
777 * This replaces inet_addr, the return value from which
778 * cannot distinguish between failure and a local broadcast address.
782 register const char *cp;
783 struct in_addr *addr;
794 * Run through the string, grabbing numbers until
795 * the end of the string, or some error
800 val = strtoul(c, &endptr, 0);
802 if (errno == ERANGE) /* Fail completely if it overflowed. */
806 * If the whole string is invalid, endptr will equal
807 * c.. this way we can make sure someone hasn't
808 * gone '.12' or something which would get past
816 /* Check the next character past the previous number's end */
819 /* Make sure we only do 3 dots .. */
820 if (n == 3) /* Whoops. Quit. */
831 if (isspace((unsigned char)*c)) {
835 return (0); /* Invalid character, so fail */
841 * Concoct the address according to
842 * the number of parts specified.
846 case 0: /* a -- 32 bits */
848 * Nothing is necessary here. Overflow checking was
849 * already done in strtoul().
852 case 1: /* a.b -- 8.24 bits */
853 if (val > 0xffffff || parts[0] > 0xff)
855 val |= parts[0] << 24;
858 case 2: /* a.b.c -- 8.8.16 bits */
859 if (val > 0xffff || parts[0] > 0xff || parts[1] > 0xff)
861 val |= (parts[0] << 24) | (parts[1] << 16);
864 case 3: /* a.b.c.d -- 8.8.8.8 bits */
865 if (val > 0xff || parts[0] > 0xff || parts[1] > 0xff ||
868 val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
873 addr->s_addr = htonl(val);
878 * ASCII internet address interpretation routine.
879 * The value returned is in network order.
881 in_addr_t /* XXX should be struct in_addr :( */
883 register const char *cp;
887 if (inet_aton(cp, &val))
889 return (INADDR_NONE);
893 getgrouplist(uname, agroup, groups, grpcnt)
896 register gid_t *groups;
899 register struct group *grp;
900 register int i, ngroups;
907 * When installing primary group, duplicate it;
908 * the first element of groups is the effective gid
909 * and will be overwritten when a setgid file is executed.
911 groups[ngroups++] = agroup;
913 groups[ngroups++] = agroup;
915 * Scan the group file to find additional groups.
918 while ((grp = getgrent())) {
919 for (i = 0; i < ngroups; i++) {
920 if (grp->gr_gid == groups[i])
923 for (i = 0; grp->gr_mem[i]; i++) {
924 if (!strcmp(grp->gr_mem[i], uname)) {
925 if (ngroups >= maxgroups) {
929 groups[ngroups++] = grp->gr_gid;
941 initgroups(uname, agroup)
945 gid_t groups[32], ngroups;
948 getgrouplist(uname, agroup, groups, &ngroups);
949 return (setgroups(ngroups, groups));