Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
1.6 KiB
C
100 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2023 Hengqi Chen */
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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pid_t my_pid = 0;
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int test1_result = 0;
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int test2_result = 0;
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int test3_result = 0;
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int test4_result = 0;
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SEC("uprobe/./liburandom_read.so:urandlib_api_sameoffset")
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int BPF_UPROBE(test1)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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test1_result = 1;
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return 0;
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}
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SEC("uprobe/./liburandom_read.so:urandlib_api_sameoffset@LIBURANDOM_READ_1.0.0")
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int BPF_UPROBE(test2)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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test2_result = 1;
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return 0;
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}
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SEC("uretprobe/./liburandom_read.so:urandlib_api_sameoffset@@LIBURANDOM_READ_2.0.0")
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int BPF_URETPROBE(test3, int ret)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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test3_result = ret;
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return 0;
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}
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SEC("uprobe")
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int BPF_UPROBE(test4)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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test4_result = 1;
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return 0;
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}
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#if defined(__TARGET_ARCH_x86)
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struct pt_regs regs;
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SEC("uprobe")
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int BPF_UPROBE(test_regs_change)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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ctx->ax = regs.ax;
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ctx->cx = regs.cx;
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ctx->dx = regs.dx;
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ctx->r8 = regs.r8;
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ctx->r9 = regs.r9;
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ctx->r10 = regs.r10;
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ctx->r11 = regs.r11;
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ctx->di = regs.di;
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ctx->si = regs.si;
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return 0;
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}
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unsigned long ip;
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SEC("uprobe")
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int BPF_UPROBE(test_regs_change_ip)
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{
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pid_t pid = bpf_get_current_pid_tgid() >> 32;
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if (pid != my_pid)
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return 0;
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ctx->ip = ip;
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return 0;
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}
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#endif
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