diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/trace/beauty/ioctl.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/tools/perf/trace/beauty/ioctl.c b/tools/perf/trace/beauty/ioctl.c new file mode 100644 index 000000000..e19eb6ea3 --- /dev/null +++ b/tools/perf/trace/beauty/ioctl.c @@ -0,0 +1,187 @@ +// 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); +} |