I think this makes sense, will look at it more closely tomorrow though.
On Sat, Sep 15, 2012 at 03:22:37PM +0200, Marcel Partap wrote:
> by picking up the process group leader from the terminal fd
> via tcgetpgrp() instead of using the direct pane child process.
>
> (works on linux, other platforms untested)
> ---
> trunk/cmd.c | 2 +-
> trunk/format.c | 2 +-
> trunk/osdep-aix.c | 2 +-
> trunk/osdep-darwin.c | 10 +++++++---
> trunk/osdep-dragonfly.c | 4 ++--
> trunk/osdep-freebsd.c | 10 +++++++---
> trunk/osdep-hpux.c | 2 +-
> trunk/osdep-linux.c | 8 ++++++--
> trunk/osdep-netbsd.c | 4 ++--
> trunk/osdep-openbsd.c | 8 +++++---
> trunk/osdep-sunos.c | 8 ++++++--
> trunk/osdep-unknown.c | 2 +-
> trunk/tmux.h | 2 +-
> 13 files changed, 41 insertions(+), 23 deletions(-)
>
> diff --git a/trunk/cmd.c b/trunk/cmd.c
> index 2413642..17d182c 100644
> --- a/trunk/cmd.c
> +++ b/trunk/cmd.c
> @@ -1296,7 +1296,7 @@ cmd_get_default_path(struct cmd_ctx *ctx, const char
> *cwd)
> if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
> root = ctx->cmdclient->cwd;
> else if (ctx->curclient != NULL && s->curw != NULL)
> - root = osdep_get_cwd(s->curw->window->active->pid);
> + root = osdep_get_cwd(s->curw->window->active->fd);
> else
> return (s->cwd);
> skip = 0;
> diff --git a/trunk/format.c b/trunk/format.c
> index 55d51df..19f322a 100644
> --- a/trunk/format.c
> +++ b/trunk/format.c
> @@ -391,7 +391,7 @@ format_window_pane(struct format_tree *ft, struct
> window_pane *wp)
> format_add(ft, "pane_start_command", "%s", wp->cmd);
> if (wp->cwd != NULL)
> format_add(ft, "pane_start_path", "%s", wp->cwd);
> - format_add(ft, "pane_current_path", "%s", osdep_get_cwd(wp->pid));
> + format_add(ft, "pane_current_path", "%s", osdep_get_cwd(wp->fd));
> format_add(ft, "pane_pid", "%ld", (long) wp->pid);
> format_add(ft, "pane_tty", "%s", wp->tty);
> }
> diff --git a/trunk/osdep-aix.c b/trunk/osdep-aix.c
> index 2a29165..8d59081 100644
> --- a/trunk/osdep-aix.c
> +++ b/trunk/osdep-aix.c
> @@ -29,7 +29,7 @@ osdep_get_name(unused int fd, unused char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(unused int fd)
> {
> return (NULL);
> }
> diff --git a/trunk/osdep-darwin.c b/trunk/osdep-darwin.c
> index 9cac131..b112fa7 100644
> --- a/trunk/osdep-darwin.c
> +++ b/trunk/osdep-darwin.c
> @@ -26,7 +26,7 @@
> #include <unistd.h>
>
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> #define unused __attribute__ ((unused))
> @@ -51,14 +51,18 @@ osdep_get_name(int fd, unused char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> static char wd[PATH_MAX];
> struct proc_vnodepathinfo pathinfo;
> + pid_t pgrp;
> int ret;
>
> + if ((pgrp = tcgetpgrp(fd)) == -1)
> + return (NULL);
> +
> ret = proc_pidinfo(
> - pid, PROC_PIDVNODEPATHINFO, 0, &pathinfo, sizeof pathinfo);
> + pgrp, PROC_PIDVNODEPATHINFO, 0, &pathinfo, sizeof pathinfo);
> if (ret == sizeof pathinfo) {
> strlcpy(wd, pathinfo.pvi_cdir.vip_path, sizeof wd);
> return (wd);
> diff --git a/trunk/osdep-dragonfly.c b/trunk/osdep-dragonfly.c
> index 22045c3..ad417d9 100644
> --- a/trunk/osdep-dragonfly.c
> +++ b/trunk/osdep-dragonfly.c
> @@ -31,7 +31,7 @@
>
> struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> #ifndef nitems
> @@ -121,7 +121,7 @@ error:
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> return (NULL);
> }
> diff --git a/trunk/osdep-freebsd.c b/trunk/osdep-freebsd.c
> index 1027a64..d596eab 100644
> --- a/trunk/osdep-freebsd.c
> +++ b/trunk/osdep-freebsd.c
> @@ -33,7 +33,7 @@
>
> struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> #ifndef nitems
> @@ -133,13 +133,17 @@ error:
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> static char wd[PATH_MAX];
> struct kinfo_file *info = NULL;
> + pid_t pgrp;
> int nrecords, i;
>
> - if ((info = kinfo_getfile(pid, &nrecords)) == NULL)
> + if ((pgrp = tcgetpgrp(fd)) == -1)
> + return (NULL);
> +
> + if ((info = kinfo_getfile(pgrp, &nrecords)) == NULL)
> return (NULL);
>
> for (i = 0; i < nrecords; i++) {
> diff --git a/trunk/osdep-hpux.c b/trunk/osdep-hpux.c
> index c962a1f..352e375 100644
> --- a/trunk/osdep-hpux.c
> +++ b/trunk/osdep-hpux.c
> @@ -29,7 +29,7 @@ osdep_get_name(unused int fd, unused char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(unused int fd)
> {
> return (NULL);
> }
> diff --git a/trunk/osdep-linux.c b/trunk/osdep-linux.c
> index 8adf202..b65acff 100644
> --- a/trunk/osdep-linux.c
> +++ b/trunk/osdep-linux.c
> @@ -61,13 +61,17 @@ osdep_get_name(int fd, unused char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> static char target[MAXPATHLEN + 1];
> char *path;
> + pid_t pgrp;
> ssize_t n;
>
> - xasprintf(&path, "/proc/%d/cwd", pid);
> + if ((pgrp = tcgetpgrp(fd)) == -1)
> + return (NULL);
> +
> + xasprintf(&path, "/proc/%lld/cwd", (long long) pgrp);
> n = readlink(path, target, MAXPATHLEN);
> free(path);
> if (n > 0) {
> diff --git a/trunk/osdep-netbsd.c b/trunk/osdep-netbsd.c
> index bb2676c..f16d0dc 100644
> --- a/trunk/osdep-netbsd.c
> +++ b/trunk/osdep-netbsd.c
> @@ -34,7 +34,7 @@
>
> struct kinfo_proc2 *cmp_procs(struct kinfo_proc2 *, struct kinfo_proc2 *);
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> struct kinfo_proc2 *
> @@ -125,7 +125,7 @@ error:
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> return (NULL);
> }
> diff --git a/trunk/osdep-openbsd.c b/trunk/osdep-openbsd.c
> index 4fb75bf..9eee984 100644
> --- a/trunk/osdep-openbsd.c
> +++ b/trunk/osdep-openbsd.c
> @@ -37,7 +37,7 @@
>
> struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> struct kinfo_proc *
> @@ -135,12 +135,14 @@ error:
> }
>
> char*
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> - int name[] = { CTL_KERN, KERN_PROC_CWD, (int)pid };
> + int name[] = { CTL_KERN, KERN_PROC_CWD, 0 };
> static char path[MAXPATHLEN];
> size_t pathlen = sizeof path;
>
> + if ((name[2] = tcgetpgrp(fd)) == -1)
> + return (NULL);
> if (sysctl(name, 3, path, &pathlen, NULL, 0) != 0)
> return (NULL);
> return (path);
> diff --git a/trunk/osdep-sunos.c b/trunk/osdep-sunos.c
> index bb67412..fd644f5 100644
> --- a/trunk/osdep-sunos.c
> +++ b/trunk/osdep-sunos.c
> @@ -65,13 +65,17 @@ osdep_get_name(int fd, char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> static char target[MAXPATHLEN + 1];
> char *path;
> ssize_t n;
> + pid_t pgrp;
> +
> + if ((pgrp = tcgetpgrp(fd)) == -1)
> + return (NULL);
>
> - xasprintf(&path, "/proc/%u/path/cwd", (u_int) pid);
> + xasprintf(&path, "/proc/%u/path/cwd", (u_int) pgrp);
> n = readlink(path, target, MAXPATHLEN);
> free(path);
> if (n > 0) {
> diff --git a/trunk/osdep-unknown.c b/trunk/osdep-unknown.c
> index c962a1f..41f435b 100644
> --- a/trunk/osdep-unknown.c
> +++ b/trunk/osdep-unknown.c
> @@ -29,7 +29,7 @@ osdep_get_name(unused int fd, unused char *tty)
> }
>
> char *
> -osdep_get_cwd(pid_t pid)
> +osdep_get_cwd(int fd)
> {
> return (NULL);
> }
> diff --git a/trunk/tmux.h b/trunk/tmux.h
> index a3d64de..ce44011 100644
> --- a/trunk/tmux.h
> +++ b/trunk/tmux.h
> @@ -2257,7 +2257,7 @@ u_int utf8_split2(u_int, u_char *);
>
> /* osdep-*.c */
> char *osdep_get_name(int, char *);
> -char *osdep_get_cwd(pid_t);
> +char *osdep_get_cwd(int);
> struct event_base *osdep_event_init(void);
>
> /* log.c */
> --
> 1.7.10.4
>
>
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