185 lines
3.6 KiB
C
185 lines
3.6 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017-2019 Giacomo Tesio <giacomo@tesio.it>
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, version 3 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <posix.h>
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#include "internal.h"
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int
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POSIX_isatty(int *errnop, int fd)
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{
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char buf[64];
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int l;
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if(fd < 0){
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*errnop = __libposix_get_errno(PosixEBADF);
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return 0;
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}
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if(fd2path(fd, buf, sizeof(buf)) < 0){
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*errnop = __libposix_get_errno(PosixENOTTY);
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return 0;
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}
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l = strlen(buf);
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if((l >= 9 && strcmp(buf+l-9, "/dev/cons") == 0)
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||(l >= 8 && strcmp(buf+l-8, "/dev/tty") == 0))
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return 1;
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*errnop = __libposix_get_errno(PosixENOTTY);
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return 0;
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}
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unsigned int
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POSIX_sleep(unsigned int seconds)
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{
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sleep(seconds*1000);
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return 0;
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}
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unsigned int
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POSIX_usleep(int *errnop, unsigned int usec)
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{
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if(usec >= 1000000){
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*errnop = __libposix_get_errno(PosixEINVAL);
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return -1;
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}
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unsigned int ms = usec == 0 ? 0 : (usec+1000)/1000;
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sleep(ms);
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return 0;
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}
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int
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POSIX_pause(int *errnop)
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{
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rendezvous((void*)~0, (void*)1);
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*errnop = __libposix_get_errno(PosixEINTR);
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return -1;
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}
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clock_t
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POSIX_times(int *errnop, void *buf)
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{
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*errnop = __libposix_get_errno(PosixEINVAL);
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return -1;
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}
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char*
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POSIX_getlogin(int *errnop)
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{
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return jehanne_getuser();
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}
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int
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POSIX_getlogin_r(int *errnop, char *name, int namesize)
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{
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static char user[64];
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int fd;
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int n;
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fd = open("/dev/user", OREAD);
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if(fd < 0)
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goto None;
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n = read(fd, user, (sizeof user)-1);
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close(fd);
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if(n <= 0)
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goto None;
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if(namesize < n){
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*errnop = __libposix_get_errno(PosixERANGE);
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return __libposix_get_errno(PosixERANGE);
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}
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user[n] = 0;
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return 0;
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None:
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if(namesize < 5){
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*errnop = __libposix_get_errno(PosixERANGE);
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return __libposix_get_errno(PosixERANGE);
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}
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jehanne_strcpy(name, "none");
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name[5] = 0;
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return 0;
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}
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char*
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POSIX_getcwd(int *errnop, char *buf, int size)
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{
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long len;
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if(buf == nil || size <= 0){
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*errnop = __libposix_get_errno(PosixEINVAL);
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return nil;
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}
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len = jehanne_getwd(buf, size);
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if(len == 0){
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*errnop = __libposix_get_errno(PosixEACCES);
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return nil;
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}
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if(len < 0){
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*errnop = __libposix_get_errno(PosixERANGE);
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return nil;
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}
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return buf;
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}
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char*
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POSIX_getpass(int *errnop, const char *prompt)
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{
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int r, w, ctl;
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char *p;
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static char buf[256];
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if(fd2path(0, buf, sizeof(buf)) == 0
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&& (strcmp("/dev/cons", buf) == 0 || strcmp("/dev/tty", buf) == 0))
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r = 0;
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else if((r = open("/dev/cons", OREAD)) < 0)
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goto ReturnENXIO;
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if(fd2path(1, buf, sizeof(buf)) == 0
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&& (strcmp("/dev/cons", buf) == 0 || strcmp("/dev/tty", buf) == 0))
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w = 1;
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else if((w = open("/dev/cons", OWRITE)) < 0)
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goto CloseRAndReturnENXIO;
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if((ctl = open("/dev/consctl", OWRITE)) < 0)
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goto CloseRWAndReturnENXIO;
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fprint(w, "%s", prompt);
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write(ctl, "rawon", 5);
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p = buf;
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while(p < buf+sizeof(buf)-1 && read(r, p, 1) == 1){
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if(*p == '\n')
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break;
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if(*p == ('u' & 037))
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p = buf;
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else if(*p == '\b'){
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if (p > buf)
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--p;
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} else
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++p;
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}
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*p = '\0';
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write(ctl, "rawoff", 6);
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return buf;
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CloseRWAndReturnENXIO:
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close(w);
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CloseRAndReturnENXIO:
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close(r);
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ReturnENXIO:
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*errnop = __libposix_get_errno(PosixENXIO);
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return nil;
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}
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