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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | // SPDX-License-Identifier: LGPL-2.1 /* * trace/beauty/ioctl.c * * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> */ #include "trace/beauty/beauty.h" #include <linux/kernel.h> /* * FIXME: to support all arches we have to improve this, for * now, to build on older systems without things like TIOCGEXCL, * get it directly from our copy. * * Right now only x86 is being supported for beautifying ioctl args * in 'perf trace', see tools/perf/trace/beauty/Build and builtin-trace.c */ #include <uapi/asm-generic/ioctls.h> static size_t ioctl__scnprintf_tty_cmd(int nr, int dir, char *bf, size_t size) { static const char *ioctl_tty_cmd[] = { [_IOC_NR(TCGETS)] = "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW", "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL", "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI", "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC", "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX", "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO", "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [_IOC_NR(TIOCSBRK)] = "TIOCSBRK", "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2", "TIOCGRS48", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK", "TIOCGDEV", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG", "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", [_IOC_NR(TIOCGEXCL)] = "TIOCGEXCL", "TIOCGPTPEER", "TIOCGISO7816", "TIOCSISO7816", [_IOC_NR(FIONCLEX)] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG", "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS", "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI", "TIOCMIWAIT", "TIOCGICOUNT", }; static DEFINE_STRARRAY(ioctl_tty_cmd, ""); if (nr < strarray__ioctl_tty_cmd.nr_entries && strarray__ioctl_tty_cmd.entries[nr] != NULL) return scnprintf(bf, size, "%s", strarray__ioctl_tty_cmd.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 'T', nr, dir); } static size_t ioctl__scnprintf_drm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/drm_ioctl_array.c" static DEFINE_STRARRAY(drm_ioctl_cmds, ""); if (nr < strarray__drm_ioctl_cmds.nr_entries && strarray__drm_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "DRM_%s", strarray__drm_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 'd', nr, dir); } static size_t ioctl__scnprintf_sndrv_pcm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/sndrv_pcm_ioctl_array.c" static DEFINE_STRARRAY(sndrv_pcm_ioctl_cmds, ""); if (nr < strarray__sndrv_pcm_ioctl_cmds.nr_entries && strarray__sndrv_pcm_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "SNDRV_PCM_%s", strarray__sndrv_pcm_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 'A', nr, dir); } static size_t ioctl__scnprintf_sndrv_ctl_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/sndrv_ctl_ioctl_array.c" static DEFINE_STRARRAY(sndrv_ctl_ioctl_cmds, ""); if (nr < strarray__sndrv_ctl_ioctl_cmds.nr_entries && strarray__sndrv_ctl_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "SNDRV_CTL_%s", strarray__sndrv_ctl_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 'U', nr, dir); } static size_t ioctl__scnprintf_kvm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/kvm_ioctl_array.c" static DEFINE_STRARRAY(kvm_ioctl_cmds, ""); if (nr < strarray__kvm_ioctl_cmds.nr_entries && strarray__kvm_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "KVM_%s", strarray__kvm_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 0xAE, nr, dir); } static size_t ioctl__scnprintf_vhost_virtio_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/vhost_virtio_ioctl_array.c" static DEFINE_STRARRAY(vhost_virtio_ioctl_cmds, ""); static DEFINE_STRARRAY(vhost_virtio_ioctl_read_cmds, ""); struct strarray *s = (dir & _IOC_READ) ? &strarray__vhost_virtio_ioctl_read_cmds : &strarray__vhost_virtio_ioctl_cmds; if (nr < s->nr_entries && s->entries[nr] != NULL) return scnprintf(bf, size, "VHOST_%s", s->entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 0xAF, nr, dir); } static size_t ioctl__scnprintf_perf_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/perf_ioctl_array.c" static DEFINE_STRARRAY(perf_ioctl_cmds, ""); if (nr < strarray__perf_ioctl_cmds.nr_entries && strarray__perf_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "PERF_%s", strarray__perf_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%#x, %#x, %#x)", 0xAE, nr, dir); } static size_t ioctl__scnprintf_usbdevfs_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/usbdevfs_ioctl_array.c" static DEFINE_STRARRAY(usbdevfs_ioctl_cmds, ""); if (nr < strarray__usbdevfs_ioctl_cmds.nr_entries && strarray__usbdevfs_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "USBDEVFS_%s", strarray__usbdevfs_ioctl_cmds.entries[nr]); return scnprintf(bf, size, "(%c, %#x, %#x)", 'U', nr, dir); } static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size, bool show_prefix) { const char *prefix = "_IOC_"; int dir = _IOC_DIR(cmd), type = _IOC_TYPE(cmd), nr = _IOC_NR(cmd), sz = _IOC_SIZE(cmd); int printed = 0; static const struct ioctl_type { int type; size_t (*scnprintf)(int nr, int dir, char *bf, size_t size); } ioctl_types[] = { /* Must be ordered by type */ { .type = '$', .scnprintf = ioctl__scnprintf_perf_cmd, }, ['A' - '$'] = { .type = 'A', .scnprintf = ioctl__scnprintf_sndrv_pcm_cmd, }, ['T' - '$'] = { .type = 'T', .scnprintf = ioctl__scnprintf_tty_cmd, }, ['U' - '$'] = { .type = 'U', .scnprintf = ioctl__scnprintf_sndrv_ctl_cmd, }, ['d' - '$'] = { .type = 'd', .scnprintf = ioctl__scnprintf_drm_cmd, }, [0xAE - '$'] = { .type = 0xAE, .scnprintf = ioctl__scnprintf_kvm_cmd, }, [0xAF - '$'] = { .type = 0xAF, .scnprintf = ioctl__scnprintf_vhost_virtio_cmd, }, }; const int nr_types = ARRAY_SIZE(ioctl_types); if (type >= ioctl_types[0].type && type <= ioctl_types[nr_types - 1].type) { const int index = type - ioctl_types[0].type; if (ioctl_types[index].scnprintf != NULL) return ioctl_types[index].scnprintf(nr, dir, bf, size); } printed += scnprintf(bf + printed, size - printed, "%c", '('); if (dir == _IOC_NONE) { printed += scnprintf(bf + printed, size - printed, "%s%s", show_prefix ? prefix : "", "NONE"); } else { if (dir & _IOC_READ) printed += scnprintf(bf + printed, size - printed, "%s%s", show_prefix ? prefix : "", "READ"); if (dir & _IOC_WRITE) { printed += scnprintf(bf + printed, size - printed, "%s%s%s", dir & _IOC_READ ? "|" : "", show_prefix ? prefix : "", "WRITE"); } } return printed + scnprintf(bf + printed, size - printed, ", %#x, %#x, %#x)", type, nr, sz); } #ifndef USB_DEVICE_MAJOR #define USB_DEVICE_MAJOR 189 #endif // USB_DEVICE_MAJOR size_t syscall_arg__scnprintf_ioctl_cmd(char *bf, size_t size, struct syscall_arg *arg) { unsigned long cmd = arg->val; int fd = syscall_arg__val(arg, 0); struct file *file = thread__files_entry(arg->thread, fd); if (file != NULL) { if (file->dev_maj == USB_DEVICE_MAJOR) return ioctl__scnprintf_usbdevfs_cmd(_IOC_NR(cmd), _IOC_DIR(cmd), bf, size); } return ioctl__scnprintf_cmd(cmd, bf, size, arg->show_string_prefix); } |