... cap_set_proc() failed to drop root privileges: Operation not permitted Resolution vi /etc/sysconfig/ntpd 1. locate the following line and comment it out: # OPTIONS="-u ntp:ntp -p /var/run/ntpd.pid -g" 1. Now the restart will work: service ntpd start 1....
sudo setcap cap_net_bind_service=+ep/path/to/program 请确保你拥有足够的特权,并正确使用相关命令来避免 “Operation not permitted” 错误。
cap_set_flag(cap, CAP_EFFECTIVE, (conf->chroot_dir ?3:2), capval, CAP_SET);if(cap_set_proc(cap)!=0) { ap_log_error (APLOG_MARK, APLOG_ERR,0,NULL,"%s CRITICAL ERROR %s:cap_set_procfailed before setuid", MODULE_NAME, __func__); } cap_free(cap); setgroups(startup_group...
2)首先通过cap_init()初始化存放cap能力值的状态,随后通过cap_set_flag函数的调用,将三种位图的能力设置给了变量caps,再通过cap_set_proc(caps)设定当前进程的能力值,通过cap_get_proc()返回当前进程的能力值,最后通过cap_free(caps)释放能力值. 3)cap_set_flag函数的原型是: int cap_set_flag(cap_t cap_...
42 cap_set_flag(caps, CAP_EFFECTIVE, num_caps, capList, CAP_SET); 43 cap_set_flag(caps, CAP_INHERITABLE, num_caps, capList, CAP_SET); 44 cap_set_flag(caps, CAP_PERMITTED, num_caps, capList, CAP_SET); 45 46 if (cap_set_proc(caps)) { 47 perror("capset()"); 48 49 re...
CAP_PERMITTED,1,cap_values,CAP_SET);cap_set_proc(caps); prctl(PR_SET_KEEPCAPS,1,0,0,0);cap_free(caps);setegid(getgid()); seteuid(getuid());Theproblemisthatafterrunningthiscode,Iget“Operationnot permitted”whencallingsched_setschedulerasalludedtointhecommentabove.Whatam Idoingwrong? 问题...
cap_net_raw是一个Linux能力,它允许用户创建原始套接字并发送原始数据包。+p可能表示持久性(persistence)或特定的权限修饰符,但在这个上下文中不太明确。setuid是一种特殊的文件权限,它使得普通用户在执行该文件时具有文件所有者的权限。 4. 提供可能的解决方案来修复operation not permitted错误...
"CAP_SETUID", "CAP_SETPCAP", "CAP_LINUX_IMMUTABLE", "CAP_NET_BIND_SERVICE", "CAP_NET_BROADCAST", "CAP_NET_ADMIN", "CAP_NET_RAW", "CAP_IPC_LOCK", "CAP_IPC_OWNER", "CAP_SYS_MODULE", "CAP_SYS_RAWIO", "CAP_SYS_CHROOT", ...
此时进程执行主要涉及6个id:Real uid/gid,Effective uid/gid/supplementary group,Saved set-user-ID/saved set-group-ID。 下面分别用RUID, EUID,SUID来表示实际用户ID,有效用户ID,设置用户ID。另外用户ID是个整型数,为了说明方便真接使用了用户名来代表不同的UID。先解释一下这几个ID的作用: ...
If not, capsh exits with status 1. --has-a=xxx Exit with status 1 unless the ambient vector has capability xxx raised. --has-b=xxx Exit with status 1 unless the bounding vector has capability xxx in its (default) non-blocked state. --iab=xxx Attempts to set the IAB tuple of ...