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