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optimize function get_cgroup2_mount_point

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fancy
2020-05-02 04:15:54 +08:00
parent dca895c7cc
commit a80187f947
1 changed files with 7 additions and 3 deletions
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10
cgattach.cpp
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@@ -32,10 +32,14 @@ bool validate(string pid, string cgroup) {
}
string get_cgroup2_mount_point(){
char cgroup2_mount_point[100];
FILE* fp = popen("findmnt -t cgroup2 -n |cut -d' ' -f 1", "r");
fscanf(fp,"%s",&cgroup2_mount_point);
char cgroup2_mount_point[100]="";
FILE* fp = popen("findmnt -t cgroup2 -n -o TARGET", "r");
int count=fscanf(fp,"%s",&cgroup2_mount_point);
fclose(fp);
if (count=0){
fprintf(stderr, "cgroup2 not supported\n");
exit(EXIT_FAILURE);
}
return cgroup2_mount_point;
}