forked from mirror/dwm
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
#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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* See Also:
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* man 2 stat #TODO: Figure this out on linux
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*
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* According to POSIX.1-2001, lstat() on a symbolic link need return
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valid information only in the st_size field and the file type of
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the st_mode field of the stat structure. POSIX.1-2008 tightens
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the specification, requiring lstat() to return valid information
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in all fields except the mode bits in st_mode.
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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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return "/run/current-system/sw/bin/dwm";
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// https://en.wikibooks.org/wiki/C_Programming/POSIX_Reference/sys/stat.h#Member_types
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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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//
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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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//
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// length = s.st_size + 1 - rate;
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//
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// do{
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// length+=rate;
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//
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// free(path);
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// path = malloc(sizeof(char) * length);
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//
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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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//
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// r = readlink("/proc/self/exe", path, length);
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//
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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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//
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// path[r] = '\0';
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//
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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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