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Annotation of embedaddon/tmux/osdep-aix.c, revision 1.1.1.1

1.1       misho       1: /* $OpenBSD$ */
                      2: 
                      3: /*
                      4:  * Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18: 
                     19: #include <sys/param.h>
                     20: #include <sys/procfs.h>
                     21: 
                     22: #include <stdlib.h>
                     23: #include <string.h>
                     24: #include <fcntl.h>
                     25: 
                     26: #include "tmux.h"
                     27: 
                     28: char *
                     29: osdep_get_name(__unused int fd, char *tty)
                     30: {
                     31:        struct psinfo    p;
                     32:        char            *path;
                     33:        ssize_t          bytes;
                     34:        int              f, ttyfd, retval;
                     35:        pid_t            pgrp;
                     36: 
                     37:        if ((ttyfd = open(tty, O_RDONLY|O_NOCTTY)) == -1)
                     38:                return (NULL);
                     39: 
                     40:        retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
                     41:        close(ttyfd);
                     42:        if (retval == -1)
                     43:                return (NULL);
                     44: 
                     45:        xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
                     46:        f = open(path, O_RDONLY);
                     47:        free(path);
                     48:        if (f < 0)
                     49:                return (NULL);
                     50: 
                     51:        bytes = read(f, &p, sizeof(p));
                     52:        close(f);
                     53:        if (bytes != sizeof(p))
                     54:                return (NULL);
                     55: 
                     56:        return (xstrdup(p.pr_fname));
                     57: }
                     58: 
                     59: char *
                     60: osdep_get_cwd(int fd)
                     61: {
                     62:        static char      target[MAXPATHLEN + 1];
                     63:        char            *path;
                     64:        const char      *ttypath;
                     65:        ssize_t          n;
                     66:        pid_t            pgrp;
                     67:        int              len, retval, ttyfd;
                     68: 
                     69:        if ((ttypath = ptsname(fd)) == NULL)
                     70:                return (NULL);
                     71:        if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
                     72:                return (NULL);
                     73: 
                     74:        retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
                     75:        close(ttyfd);
                     76:        if (retval == -1)
                     77:                return (NULL);
                     78: 
                     79:        xasprintf(&path, "/proc/%u/cwd", (u_int) pgrp);
                     80:        n = readlink(path, target, MAXPATHLEN);
                     81:        free(path);
                     82:        if (n > 0) {
                     83:                target[n] = '\0';
                     84:                if ((len = strlen(target)) > 1 && target[len - 1] == '/')
                     85:                        target[len - 1] = '\0';
                     86:                return (target);
                     87:        }
                     88:        return (NULL);
                     89: }
                     90: 
                     91: struct event_base *
                     92: osdep_event_init(void)
                     93: {
                     94:        return (event_init());
                     95: }