47 lines
953 B
Plaintext
Executable File
47 lines
953 B
Plaintext
Executable File
#!/usr/bin/env bpftrace
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/*
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* opensnoop Trace open() syscalls.
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* For Linux, uses bpftrace and eBPF.
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*
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* Also a basic example of bpftrace.
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*
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* USAGE: opensnoop.bt
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*
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* This is a bpftrace version of the bcc tool of the same name.
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*
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* Copyright 2018 Netflix, Inc.
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* Licensed under the Apache License, Version 2.0 (the "License")
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*
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* 08-Sep-2018 Brendan Gregg Created this.
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*/
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BEGIN
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{
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printf("Tracing open syscalls... Hit Ctrl-C to end.\n");
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printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
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}
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tracepoint:syscalls:sys_enter_open,
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tracepoint:syscalls:sys_enter_openat
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{
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@filename[tid] = args.filename;
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}
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tracepoint:syscalls:sys_exit_open,
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tracepoint:syscalls:sys_exit_openat
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/@filename[tid]/
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{
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$ret = args.ret;
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$fd = $ret >= 0 ? $ret : -1;
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$errno = $ret >= 0 ? 0 : - $ret;
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printf("%-6d %-16s %4d %3d %s\n", pid, comm, $fd, $errno,
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str(@filename[tid]));
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delete(@filename[tid]);
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}
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END
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{
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clear(@filename);
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}
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