/* * Naive system call dropper built on seccomp_filter. * * Copyright (c) 2012 The Chromium OS Authors * Author: Will Drewry * * The code may be used by anyone for any purpose, * and can serve as a starting point for developing * applications using prctl(PR_SET_SECCOMP, 2, ...). * * When run, returns the specified errno for the specified * system call number against the given architecture. * */ #include #include #include #include #include #include #include #include #include #include static int install_filter(int nr, int arch, int error) { struct sock_filter filter[] = { BPF_STMT(BPF_LD+BPF_W+BPF_ABS, (offsetof(struct seccomp_data, arch))), BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, arch, 0, 3), BPF_STMT(BPF_LD+BPF_W+BPF_ABS, (offsetof(struct seccomp_data, nr))), BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, nr, 0, 1), BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ERRNO|(error & SECCOMP_RET_DATA)), BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW), }; struct sock_fprog prog = { .len = (unsigned short)(sizeof(filter)/sizeof(filter[0])), .filter = filter, }; if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0)) { perror("prctl(NO_NEW_PRIVS)"); return 1; } if (prctl(PR_SET_SECCOMP, 2, &prog)) { perror("prctl(PR_SET_SECCOMP)"); return 1; } return 0; } int main(int argc, char **argv) { if (argc < 5) { fprintf(stderr, "Usage:\n" "dropper []\n" "Hint: AUDIT_ARCH_I386: 0x%X\n" " AUDIT_ARCH_X86_64: 0x%X\n" "\n", AUDIT_ARCH_I386, AUDIT_ARCH_X86_64); return 1; } if (install_filter(strtol(argv[1], NULL, 0), strtol(argv[2], NULL, 0), strtol(argv[3], NULL, 0))) return 1; execv(argv[4], &argv[4]); printf("Failed to execv\n"); return 255; } eecommitdiff
path: root/sound/core/seq/seq_dummy.c
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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2017-01-31 00:47:30 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-01-31 00:51:06 -0800
commit05e0be7c900797e9164976a6014d534ce3035909 (patch)
tree6064ddf732b21c686c958cb9da73f6eae6de5a27 /sound/core/seq/seq_dummy.c
parent3f5c34c6d4688b3b7e1dbc7bbc68a2f03a0d6b0c (diff)
Input: synaptics-rmi4 - fix reversed conditions in enable/disable_irq_wake
These tests are reversed. A warning should be displayed if an error is returned, not on success. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'sound/core/seq/seq_dummy.c')