| // +build !plan9 |
| |
| /* |
| Plan 9 from User Space src/lib9/_p9dir.c |
| http://code.swtch.com/plan9port/src/tip/src/lib9/_p9dir.c |
| |
| Copyright 2001-2007 Russ Cox. All Rights Reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| THE SOFTWARE. |
| */ |
| |
| #include <u.h> |
| #define NOPLAN9DEFINES |
| #include <libc.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <dirent.h> |
| |
| /* |
| * Caching the last group and passwd looked up is |
| * a significant win (stupidly enough) on most systems. |
| * It's not safe for threaded programs, but neither is using |
| * getpwnam in the first place, so I'm not too worried. |
| */ |
| int |
| _p9dir(struct stat *lst, struct stat *st, char *name, Dir *d, char **str, char *estr) |
| { |
| char *s; |
| char tmp[20]; |
| int sz, fd; |
| |
| #ifdef _WIN32 |
| USED(lst); |
| #endif |
| fd = -1; |
| USED(fd); |
| sz = 0; |
| if(d) |
| memset(d, 0, sizeof *d); |
| |
| /* name */ |
| s = strrchr(name, '/'); |
| if(s) |
| s++; |
| if(!s || !*s) |
| s = name; |
| if(*s == '/') |
| s++; |
| if(*s == 0) |
| s = "/"; |
| if(d){ |
| if(*str + strlen(s)+1 > estr) |
| d->name = "oops"; |
| else{ |
| strcpy(*str, s); |
| d->name = *str; |
| *str += strlen(*str)+1; |
| } |
| } |
| sz += (int)strlen(s)+1; |
| |
| /* user */ |
| snprint(tmp, sizeof tmp, "%d", (int)st->st_uid); |
| s = tmp; |
| sz += (int)strlen(s)+1; |
| if(d){ |
| if(*str+strlen(s)+1 > estr) |
| d->uid = "oops"; |
| else{ |
| strcpy(*str, s); |
| d->uid = *str; |
| *str += strlen(*str)+1; |
| } |
| } |
| |
| /* group */ |
| snprint(tmp, sizeof tmp, "%d", (int)st->st_gid); |
| s = tmp; |
| sz += (int)strlen(s)+1; |
| if(d){ |
| if(*str + strlen(s)+1 > estr) |
| d->gid = "oops"; |
| else{ |
| strcpy(*str, s); |
| d->gid = *str; |
| *str += strlen(*str)+1; |
| } |
| } |
| |
| if(d){ |
| d->type = 'M'; |
| |
| d->muid = ""; |
| d->qid.path = ((uvlong)st->st_dev<<32) | st->st_ino; |
| #ifdef _HAVESTGEN |
| d->qid.vers = st->st_gen; |
| #endif |
| if(d->qid.vers == 0) |
| d->qid.vers = (ulong)(st->st_mtime + st->st_ctime); |
| d->mode = st->st_mode&0777; |
| d->atime = (ulong)st->st_atime; |
| d->mtime = (ulong)st->st_mtime; |
| d->length = st->st_size; |
| |
| if(S_ISDIR(st->st_mode)){ |
| d->length = 0; |
| d->mode |= DMDIR; |
| d->qid.type = QTDIR; |
| } |
| #ifdef S_ISLNK |
| if(S_ISLNK(lst->st_mode)) /* yes, lst not st */ |
| d->mode |= DMSYMLINK; |
| #endif |
| if(S_ISFIFO(st->st_mode)) |
| d->mode |= DMNAMEDPIPE; |
| #ifdef S_ISSOCK |
| if(S_ISSOCK(st->st_mode)) |
| d->mode |= DMSOCKET; |
| #endif |
| if(S_ISBLK(st->st_mode)){ |
| d->mode |= DMDEVICE; |
| d->qid.path = ('b'<<16)|st->st_rdev; |
| } |
| if(S_ISCHR(st->st_mode)){ |
| d->mode |= DMDEVICE; |
| d->qid.path = ('c'<<16)|st->st_rdev; |
| } |
| /* fetch real size for disks */ |
| if(S_ISBLK(st->st_mode) && (fd = open(name, O_RDONLY)) >= 0){ |
| d->length = 0; |
| close(fd); |
| } |
| #if defined(DIOCGMEDIASIZE) |
| if(isdisk(st)){ |
| int fd; |
| off_t mediasize; |
| |
| if((fd = open(name, O_RDONLY)) >= 0){ |
| if(ioctl(fd, DIOCGMEDIASIZE, &mediasize) >= 0) |
| d->length = mediasize; |
| close(fd); |
| } |
| } |
| #elif defined(_HAVEDISKLABEL) |
| if(isdisk(st)){ |
| int fd, n; |
| struct disklabel lab; |
| |
| if((fd = open(name, O_RDONLY)) < 0) |
| goto nosize; |
| if(ioctl(fd, DIOCGDINFO, &lab) < 0) |
| goto nosize; |
| n = minor(st->st_rdev)&7; |
| if(n >= lab.d_npartitions) |
| goto nosize; |
| |
| d->length = (vlong)(lab.d_partitions[n].p_size) * lab.d_secsize; |
| |
| nosize: |
| if(fd >= 0) |
| close(fd); |
| } |
| #endif |
| } |
| |
| return sz; |
| } |
| |