Linux下C语言修改进程名称的方法

 #include  #include  #include "./util/setproctitle.c" // extern char **environ; // int main(int argc , char *argv[]) // { // int i; // printf("argc:%d\n" , argc); // for (i = 0; i 

 /* ========================================================================== * setproctitle.c - Linux/Darwin setproctitle. * -------------------------------------------------------------------------- * Copyright (C) 2010 William Ahern * Copyright (C) 2013 Salvatore Sanfilippo * Copyright (C) 2013 Stam He * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do so, subject to the * following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * ========================================================================== */ #ifndef _GNU_SOURCE #define _GNU_SOURCE #endif #include   /* NULL size_t */ #include   /* va_list va_start va_end */ #include   /* malloc(3) setenv(3) clearenv(3) setproctitle(3) getprogname(3) */ #include   /* vsnprintf(3) snprintf(3) */ #include   /* strlen(3) strchr(3) strdup(3) memset(3) memcpy(3) */ #include   /* errno program_invocation_name program_invocation_short_name */ #if !defined(HAVE_SETPROCTITLE) #define HAVE_SETPROCTITLE (defined __NetBSD__ || defined __FreeBSD__ || defined __OpenBSD__) #endif #if !HAVE_SETPROCTITLE #if (defined __linux || defined __APPLE__) extern char **environ; static struct { /* original value */ const char *arg0; /* title space available */ char *base, *end; /* pointer to original nul character within base */ char *nul; _Bool reset; int error; } SPT; #ifndef SPT_MIN #define SPT_MIN(a, b) (((a) <(b))? (a) : (b)) #endif static inline size_t spt_min(size_t a, size_t b); static int spt_clearenv(void); static int spt_copyenv(char *oldenv[]); static int spt_copyargs(int argc, char *argv[]) ; void spt_init(int argc, char *argv[]); void setproctitle(const char *fmt, ...); static inline size_t spt_min(size_t a, size_t b) { return SPT_MIN(a, b); } /* spt_min() */ /* * For discussion on the portability of the various methods, see * http://lists.freebsd.org/pipermail/freebsd-stable/2008-June/043136.html */ static int spt_clearenv(void) { #if __GLIBC__ clearenv(); return 0; #else extern char **environ; static char **tmp; if (!(tmp = malloc(sizeof *tmp))) return errno; tmp[0] = NULL; environ = tmp; return 0; #endif } /* spt_clearenv() */ static int spt_copyenv(char *oldenv[]) { extern char **environ; char *eq; int i, error; if (environ != oldenv) return 0; if ((error = spt_clearenv())) goto error; for (i = 0; oldenv[i]; i++) { if (!(eq = strchr(oldenv[i], '='))) continue; *eq = '\0'; error = (0 != setenv(oldenv[i], eq + 1, 1))? errno : 0; *eq = '='; if (error) goto error; } return 0; error: environ = oldenv; return error; } /* spt_copyenv() */ static int spt_copyargs(int argc, char *argv[]) { char *tmp; int i; for (i = 1; i = argc && argv[i]); i++) { if (!argv[i]) continue; if (!(tmp = strdup(argv[i]))) return errno; argv[i] = tmp; } return 0; } /* spt_copyargs() */ void spt_init(int argc, char *argv[]) { char **envp = environ; char *base, *end, *nul, *tmp; int i, error; if (!(base = argv[0])) return; nul = &base[strlen(base)]; end = nul + 1; for (i = 0; i = argc && argv[i]); i++) { if (!argv[i] || argv[i]