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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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80 lines
2 KiB
ReStructuredText
80 lines
2 KiB
ReStructuredText
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bpftool-prog
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================
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-------------------------------------------------------------------------------
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tool for inspection and simple manipulation of eBPF progs
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-------------------------------------------------------------------------------
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:Manual section: 8
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SYNOPSIS
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========
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| **bpftool** prog show [*PROG*]
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| **bpftool** prog dump xlated *PROG* file *FILE*
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| **bpftool** prog dump jited *PROG* [file *FILE*] [opcodes]
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| **bpftool** prog pin *PROG* *FILE*
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| **bpftool** prog help
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| *PROG* := { id *PROG_ID* | pinned *FILE* | tag *PROG_TAG* }
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DESCRIPTION
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===========
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**bpftool prog show** [*PROG*]
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Show information about loaded programs. If *PROG* is
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specified show information only about given program, otherwise
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list all programs currently loaded on the system.
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Output will start with program ID followed by program type and
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zero or more named attributes (depending on kernel version).
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**bpftool prog dump xlated** *PROG* **file** *FILE*
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Dump eBPF instructions of the program from the kernel to a
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file.
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**bpftool prog dump jited** *PROG* [**file** *FILE*] [**opcodes**]
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Dump jited image (host machine code) of the program.
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If *FILE* is specified image will be written to a file,
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otherwise it will be disassembled and printed to stdout.
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**opcodes** controls if raw opcodes will be printed.
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**bpftool prog pin** *PROG* *FILE*
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Pin program *PROG* as *FILE*.
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Note: *FILE* must be located in *bpffs* mount.
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**bpftool prog help**
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Print short help message.
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EXAMPLES
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========
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**# bpftool prog show**
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::
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10: xdp name some_prog tag 00:5a:3d:21:23:62:0c:8b
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loaded_at Sep 29/20:11 uid 0
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xlated 528B jited 370B memlock 4096B map_ids 10
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| **# bpftool prog dump xlated id 10 file /tmp/t**
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| **# ls -l /tmp/t**
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| -rw------- 1 root root 560 Jul 22 01:42 /tmp/t
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| **# bpftool prog dum jited pinned /sys/fs/bpf/prog**
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::
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push %rbp
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mov %rsp,%rbp
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sub $0x228,%rsp
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sub $0x28,%rbp
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mov %rbx,0x0(%rbp)
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SEE ALSO
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========
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**bpftool**\ (8), **bpftool-map**\ (8)
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