Yonghong Song <yhs@xxxxxx> 于2022年2月22日周二 14:24写道： > > > > On 2/21/22 7:43 PM, Li Qiang wrote: > > Hello all, > > > > As we know, to call 'bpf_get_ns_current_pid_tgid' helper we need dev > > and inode number. The inode number is quite easy to get by 'ls -lh > > /proc/xx/ns/'. So how can we get the device number easily in practice? > > the kernel test just uses 0 to test. > > You can use the following command inside the namespace to > get the dev number and inode number. > Thanks Yonghong, this just remind me to look the stat syscall and it also contains the device info. > $ stat -L /proc/self/ns/pid > File: /proc/self/ns/pid > Size: 0 Blocks: 0 IO Block: 4096 regular > empty file > Device: 4h/4d Inode: 4026531836 Links: 1 > Access: (0444/-r--r--r--) Uid: ( 0/ root) Gid: ( 0/ root) > Access: 2022-02-21 22:22:48.782383342 -0800 > Modify: 2022-02-21 22:22:48.782383342 -0800 > Change: 2022-02-21 22:22:48.782383342 -0800 > Birth: - > > > > > > Thanks, > > Li Qiang
