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version 0.2.1

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This commit is contained in:
Edward Emelianov
2024-11-15 11:42:29 +03:00
parent 511a83e506
commit e77fddc3b8
22 changed files with 1337 additions and 495 deletions
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22
daemon.c
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@@ -31,13 +31,13 @@
#include "usefull_macros.h"
/**
* @brief readPSname - read process name from /proc/PID/cmdline
* @brief sl_getPSname - read process name from /proc/PID/cmdline
* @param pid - PID of interesting process
* @return filename or NULL if not found
* don't use this function twice for different names without copying
* its returning by strdup, because `name` contains in static array
*/
char *readPSname(pid_t pid){
char *sl_getPSname(pid_t pid){
static char name[PATH_MAX];
char *pp = name, byte, path[PATH_MAX];
FILE *file;
@@ -61,11 +61,11 @@ char *readPSname(pid_t pid){
}
/**
* @brief iffound_default - default action when running process found
* @brief sl_iffound_deflt - default action when running process found
* @param pid - another process' pid
* Redefine this function for user action
*/
void WEAK iffound_default(pid_t pid){
void WEAK sl_iffound_deflt(pid_t pid){
/// \nïÂÎÁÒÕÖÅÎ ÏÄÎÏÉÍÅÎÎÙÊ ÐÒÏÃÅÓÓ (pid=%d), ×ÙÈÏÄ.\n
fprintf(stderr, _("\nFound running process (pid=%d), exit.\n"), pid);
exit(-1);
@@ -81,7 +81,7 @@ void WEAK iffound_default(pid_t pid){
* @param selfname - argv[0] or NULL for non-locking
* @param pidfilename - name of pidfile or NULL if none
*/
void check4running(char *selfname, char *pidfilename){
void sl_check4running(char *selfname, char *pidfilename){
DIR *dir;
FILE *pidfile, *fself;
struct dirent *de;
@@ -102,7 +102,7 @@ void check4running(char *selfname, char *pidfilename){
goto selfpid;
}
if(fl.l_type != F_UNLCK){ // file is locking - exit
iffound_default(fl.l_pid);
sl_iffound_deflt(fl.l_pid);
}
fl.l_type = F_RDLCK;
if(fcntl(fileno(fself), F_SETLKW, &fl) == -1){
@@ -114,7 +114,7 @@ void check4running(char *selfname, char *pidfilename){
if(!(dir = opendir(PROC_BASE))){ // open /proc directory
ERR(PROC_BASE);
}
if(!(name = readPSname(self))){ // error reading self name
if(!(name = sl_getPSname(self))){ // error reading self name
ERR(_("Can't read self name"));
}
myname = strdup(name);
@@ -122,8 +122,8 @@ void check4running(char *selfname, char *pidfilename){
pidfile = fopen(pidfilename, "r");
if(pidfile){
if(fscanf(pidfile, "%d", &pid) > 0){ // read PID of (possibly) running process
if((name = readPSname(pid)) && strncmp(name, myname, 255) == 0)
iffound_default(pid);
if((name = sl_getPSname(pid)) && strncmp(name, myname, 255) == 0)
sl_iffound_deflt(pid);
}
fclose(pidfile);
}
@@ -132,8 +132,8 @@ void check4running(char *selfname, char *pidfilename){
while((de = readdir(dir))){ // scan /proc
if(!(pid = (pid_t)atoi(de->d_name)) || pid == self) // pass non-PID files and self
continue;
if((name = readPSname(pid)) && strncmp(name, myname, 255) == 0)
iffound_default(pid);
if((name = sl_getPSname(pid)) && strncmp(name, myname, 255) == 0)
sl_iffound_deflt(pid);
}
closedir(dir);
free(myname);