forked from mirror/dwm
66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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/**
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* Magically finds the current's executable path
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*
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* I'm doing the do{}while(); trick because Linux (what I'm running) is not
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* POSIX compilant and so lstat() cannot be trusted on /proc entries
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*
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* @return char* the path of the current executable
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*/
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char *get_dwm_path(){
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struct stat s;
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int r, length, rate = 42;
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char *path = NULL;
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if(lstat("/proc/self/exe", &s) == -1){
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perror("lstat:");
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return NULL;
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}
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length = s.st_size + 1 - rate;
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do{
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length+=rate;
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free(path);
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path = malloc(sizeof(char) * length);
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if(path == NULL){
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perror("malloc:");
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return NULL;
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}
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r = readlink("/proc/self/exe", path, length);
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if(r == -1){
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perror("readlink:");
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return NULL;
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}
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}while(r >= length);
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path[r] = '\0';
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return path;
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}
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/**
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* self-restart
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*
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* Initially inspired by: Yu-Jie Lin
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* https://sites.google.com/site/yjlnotes/notes/dwm
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*/
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void self_restart(const Arg *arg) {
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char *const argv[] = {get_dwm_path(), NULL};
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if(argv[0] == NULL){
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return;
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}
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execv(argv[0], argv);
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}
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