1================
  2bpftool-prog
  3================
  4-------------------------------------------------------------------------------
  5tool for inspection and simple manipulation of eBPF progs
  6-------------------------------------------------------------------------------
  7
  8:Manual section: 8
  9
 10SYNOPSIS
 11========
 12
 13	**bpftool** [*OPTIONS*] **prog** *COMMAND*
 14
 15	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
 16
 17	*COMMANDS* :=
 18	{ **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load** | **help** }
 19
 20MAP COMMANDS
 21=============
 22
 23|	**bpftool** **prog { show | list }** [*PROG*]
 24|	**bpftool** **prog dump xlated** *PROG* [{**file** *FILE* | **opcodes** | **visual**}]
 25|	**bpftool** **prog dump jited**  *PROG* [{**file** *FILE* | **opcodes**}]
 26|	**bpftool** **prog pin** *PROG* *FILE*
 27|	**bpftool** **prog load** *OBJ* *FILE*
 28|	**bpftool** **prog help**
 29|
 30|	*PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* }
 31
 32DESCRIPTION
 33===========
 34	**bpftool prog { show | list }** [*PROG*]
 35		  Show information about loaded programs.  If *PROG* is
 36		  specified show information only about given program, otherwise
 37		  list all programs currently loaded on the system.
 38
 39		  Output will start with program ID followed by program type and
 40		  zero or more named attributes (depending on kernel version).
 41
 42	**bpftool prog dump xlated** *PROG* [{ **file** *FILE* | **opcodes** | **visual** }]
 43		  Dump eBPF instructions of the program from the kernel. By
 44		  default, eBPF will be disassembled and printed to standard
 45		  output in human-readable format. In this case, **opcodes**
 46		  controls if raw opcodes should be printed as well.
 47
 48		  If **file** is specified, the binary image will instead be
 49		  written to *FILE*.
 50
 51		  If **visual** is specified, control flow graph (CFG) will be
 52		  built instead, and eBPF instructions will be presented with
 53		  CFG in DOT format, on standard output.
 54
 55	**bpftool prog dump jited**  *PROG* [{ **file** *FILE* | **opcodes** }]
 56		  Dump jited image (host machine code) of the program.
 57		  If *FILE* is specified image will be written to a file,
 58		  otherwise it will be disassembled and printed to stdout.
 59
 60		  **opcodes** controls if raw opcodes will be printed.
 61
 62	**bpftool prog pin** *PROG* *FILE*
 63		  Pin program *PROG* as *FILE*.
 64
 65		  Note: *FILE* must be located in *bpffs* mount.
 66
 67	**bpftool prog load** *OBJ* *FILE*
 68		  Load bpf program from binary *OBJ* and pin as *FILE*.
 69
 70		  Note: *FILE* must be located in *bpffs* mount.
 71
 72	**bpftool prog help**
 73		  Print short help message.
 74
 75OPTIONS
 76=======
 77	-h, --help
 78		  Print short generic help message (similar to **bpftool help**).
 79
 80	-v, --version
 81		  Print version number (similar to **bpftool version**).
 82
 83	-j, --json
 84		  Generate JSON output. For commands that cannot produce JSON, this
 85		  option has no effect.
 86
 87	-p, --pretty
 88		  Generate human-readable JSON output. Implies **-j**.
 89
 90	-f, --bpffs
 91		  Show file names of pinned programs.
 92
 93EXAMPLES
 94========
 95**# bpftool prog show**
 96::
 97
 98  10: xdp  name some_prog  tag 005a3d2123620c8b
 99	loaded_at Sep 29/20:11  uid 0
100	xlated 528B  jited 370B  memlock 4096B  map_ids 10
101
102**# bpftool --json --pretty prog show**
103
104::
105
106    {
107        "programs": [{
108                "id": 10,
109                "type": "xdp",
110                "tag": "005a3d2123620c8b",
111                "loaded_at": "Sep 29/20:11",
112                "uid": 0,
113                "bytes_xlated": 528,
114                "jited": true,
115                "bytes_jited": 370,
116                "bytes_memlock": 4096,
117                "map_ids": [10
118                ]
119            }
120        ]
121    }
122
123|
124| **# bpftool prog dump xlated id 10 file /tmp/t**
125| **# ls -l /tmp/t**
126|   -rw------- 1 root root 560 Jul 22 01:42 /tmp/t
127
128**# bpftool prog dum jited tag 005a3d2123620c8b**
129
130::
131
132    push   %rbp
133    mov    %rsp,%rbp
134    sub    $0x228,%rsp
135    sub    $0x28,%rbp
136    mov    %rbx,0x0(%rbp)
137
138|
139| **# mount -t bpf none /sys/fs/bpf/**
140| **# bpftool prog pin id 10 /sys/fs/bpf/prog**
141| **# bpftool prog load ./my_prog.o /sys/fs/bpf/prog2**
142| **# ls -l /sys/fs/bpf/**
143|   -rw------- 1 root root 0 Jul 22 01:43 prog
144|   -rw------- 1 root root 0 Jul 22 01:44 prog2
145
146**# bpftool prog dum jited pinned /sys/fs/bpf/prog opcodes**
147
148::
149
150    push   %rbp
151    55
152    mov    %rsp,%rbp
153    48 89 e5
154    sub    $0x228,%rsp
155    48 81 ec 28 02 00 00
156    sub    $0x28,%rbp
157    48 83 ed 28
158    mov    %rbx,0x0(%rbp)
159    48 89 5d 00
160
161
162SEE ALSO
163========
164	**bpftool**\ (8), **bpftool-map**\ (8), **bpftool-cgroup**\ (8)