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Fix shell name detection

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This commit is contained in:
Anton Anikin 2018-05-11 11:10:24 +08:00
parent 9f1d9bbf99
commit 1be55e04ce
1 changed files with 9 additions and 1 deletions
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10
src/hstr_utils.c
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@ -148,8 +148,16 @@ char *get_shell_name_by_ppid(const int pid)
{
char* name = (char*)calloc(PID_BUFFER_SIZE,sizeof(char));
if(name){
sprintf(name, "/proc/%d/cmdline",pid);
// First we should try to open /proc/[pid]/comm (since Linux 2.6.33) and only if it missing
// then use /proc/[pid]/cmdline. Second way have problems in some cases - when for example
// we open session with using "su - [username]". Then /proc/[pid]/cmdline will contains
// "-su" instead real shell name, which is present in the /proc/[pid]/comm file.
sprintf(name, "/proc/%d/comm",pid);
FILE* f = fopen(name,"r");
if (!f){
sprintf(name, "/proc/%d/cmdline",pid);
f = fopen(name,"r");
}
if(f){
size_t size = fread(name, sizeof(char), PID_BUFFER_SIZE-1, f);
if(size>0){