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	dwm-r1615-selfrestart.diff (2817B)
	---
	1 # HG changeset patch
	2 # User Barbu Paul - Gheorghe <[email protected]>
	3 # Date 1354650884 -7200
	4 # Node ID 6c472a21a5887c5295a331c48c4da188ec2c8413
	5 # Parent aaab44133a6830c9a00263731d098c01cc1d6fb5
	6 selfrestart now magically locates the current dwm (no need to hardcode a…
	7
	8 diff -r aaab44133a68 -r 6c472a21a588 config.def.h
	9 --- a/config.def.h Tue Dec 04 21:54:44 2012 +0200
	10 +++ b/config.def.h Tue Dec 04 21:54:44 2012 +0200
	11 @@ -54,6 +54,8 @@
	12 static const char *termcmd[] = { "urxvtc", NULL };
	13 static const char *filemancmd[] = { "thunar", NULL };
	14
	15 +#include "selfrestart.c"
	16 +
	17 static Key keys[] = {
	18 /* modifier key function argu…
	19 { MODKEY, XK_r, spawn, {.v …
	20 @@ -89,6 +91,7 @@
	21 TAGKEYS( XK_7, 6)
	22 TAGKEYS( XK_8, 7)
	23 TAGKEYS( XK_9, 8)
	24 + { MODKEY\|ShiftMask, XK_r, self_restart, {0} },
	25 { MODKEY\|ShiftMask, XK_q, quit, {0} …
	26 };
	27
	28 @@ -108,4 +111,3 @@
	29 { ClkTagBar, MODKEY, Button1, tag, …
	30 { ClkTagBar, MODKEY, Button3, togglet…
	31 };
	32 -
	33 diff -r aaab44133a68 -r 6c472a21a588 selfrestart.c
	34 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
	35 +++ b/selfrestart.c Tue Dec 04 21:54:44 2012 +0200
	36 @@ -0,0 +1,65 @@
	37 +#include <unistd.h>
	38 +#include <sys/types.h>
	39 +#include <sys/stat.h>
	40 +#include <stdio.h>
	41 +#include <stdlib.h>
	42 +
	43 +/**
	44 + * Magically finds the current's executable path
	45 + *
	46 + * I'm doing the do{}while(); trick because Linux (what I'm running) is…
	47 + * POSIX compilant and so lstat() cannot be trusted on /proc entries
	48 + *
	49 + * @return char* the path of the current executable
	50 + */
	51 +char *get_dwm_path(){
	52 + struct stat s;
	53 + int r, length, rate = 42;
	54 + char *path = NULL;
	55 +
	56 + if(lstat("/proc/self/exe", &s) == -1){
	57 + perror("lstat:");
	58 + return NULL;
	59 + }
	60 +
	61 + length = s.st_size + 1 - rate;
	62 +
	63 + do{
	64 + length+=rate;
	65 +
	66 + free(path);
	67 + path = malloc(sizeof(char) * length);
	68 +
	69 + if(path == NULL){
	70 + perror("malloc:");
	71 + return NULL;
	72 + }
	73 +
	74 + r = readlink("/proc/self/exe", path, length);
	75 +
	76 + if(r == -1){
	77 + perror("readlink:");
	78 + return NULL;
	79 + }
	80 + }while(r >= length);
	81 +
	82 + path[r] = '\0';
	83 +
	84 + return path;
	85 +}
	86 +
	87 +/**
	88 + * self-restart
	89 + *
	90 + * Initially inspired by: Yu-Jie Lin
	91 + * https://sites.google.com/site/yjlnotes/notes/dwm
	92 + */
	93 +void self_restart(const Arg *arg) {
	94 + char *const argv[] = {get_dwm_path(), NULL};
	95 +
	96 + if(argv[0] == NULL){
	97 + return;
	98 + }
	99 +
	100 + execv(argv[0], argv);
	101 +}