mirror of
https://github.com/kovidgoyal/calibre.git
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42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/*
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* placeholder.c
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* Copyright (C) 2018 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <libproc.h>
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#include <unistd.h>
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int
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main(int argc, char * const *argv, const char **envp) {
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int ret;
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pid_t pid;
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char pathbuf[PROC_PIDPATHINFO_MAXSIZE], realpath_buf[PROC_PIDPATHINFO_MAXSIZE * 5];
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pid = getpid();
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ret = proc_pidpath(pid, pathbuf, sizeof(pathbuf));
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if (ret <= 0) {
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perror("failed to get executable path for current pid with error");
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return 1;
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}
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char *path = realpath(pathbuf, realpath_buf);
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if (path == NULL) {
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perror("failed to get realpath for executable path with error");
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return 1;
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}
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char *t = rindex(path, '/');
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if (t == NULL) {
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fprintf(stderr, "No / in executable path: %s\n", path);
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return 1;
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}
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*(t + 1) = 0;
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snprintf(t + 1, sizeof(realpath_buf) - strlen(path), "%s/%s", REL_PATH, EXE_NAME);
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execv(path, argv);
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}
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