On Wed, Jan 03, 2018 at 06:33:46PM +0530, Harsha Sharma wrote:
> * netlink.c: decode family NETLINK_KOBJECT_UEVENT if prefix is libudev
> * linux/netlink_kobject_uevent.h: New struct (udev_monitor_netlink_header)
>
> Signed-off-by: Harsha Sharma <harshasharmai...@gmail.com>
> ---
> linux/netlink_kobject_uevent.h | 16 ++++++++++++++++
> netlink.c | 27 ++++++++++++++++++++++++++-
> 2 files changed, 42 insertions(+), 1 deletion(-)
> create mode 100644 linux/netlink_kobject_uevent.h
>
> diff --git a/linux/netlink_kobject_uevent.h b/linux/netlink_kobject_uevent.h
> new file mode 100644
> index 00000000..d83ccad5
> --- /dev/null
> +++ b/linux/netlink_kobject_uevent.h
> @@ -0,0 +1,16 @@
> +#ifndef STRACE_LINUX_NETLINK_KOBJECT_UEVENT_H
> +#define STRACE_LINUX_NETLINK_KOBJECT_UEVENT_H
> +
> +struct udev_monitor_netlink_header {
> + char prefix[8];
> + unsigned int magic;
> + unsigned int header_size;
> + unsigned int properties_off;
> + unsigned int properties_len;
> + unsigned int filter_subsystem_hash;
> + unsigned int filter_devtype_hash;
> + unsigned int filter_tag_bloom_hi;
> + unsigned int filter_tag_bloom_lo;
> +};
> +
> +#endif /* !STRACE_LINUX_NETLINK_KOBJECT_UEVENT_H */
> diff --git a/netlink.c b/netlink.c
> index 6b9a1f5c..e991ed86 100644
> --- a/netlink.c
> +++ b/netlink.c
> @@ -32,6 +32,7 @@
> #include "nlattr.h"
> #include <linux/audit.h>
> #include <linux/rtnetlink.h>
> +#include <linux/netlink_kobject_uevent.h>
> #include <linux/xfrm.h>
> #include "xlat/netlink_ack_flags.h"
> #include "xlat/netlink_delete_flags.h"
> @@ -183,6 +184,29 @@ decode_nlmsg_type_netfilter(const struct xlat *const
> xlat,
> tprintf("%#x", msg_type);
> }
>
> +static bool
> +decode_nlmsg_type_kobject_uevent(struct tcb *tcp, kernel_ulong_t addr,
> + kernel_ulong_t len,
> + const void *const opaque_data)
> +{
> + struct udev_monitor_netlink_header uh;
> + const char *prefix = "libudev";
> +
> + if (len < sizeof(uh))
> + return false;
> + if (!umove_or_printaddr(tcp, addr, &uh) &&
> + strcmp(uh.prefix, prefix) == 0) {
> + tprintf("{prefix=%s, magic=%u, header_size=%u,
> properties_off=%u, properties_len=%u, filter_subsystem_hash=%u,
> filter_devtype_hash=%u, filter_tag_bloom_hi=%u, filter_tag_bloom_lo=%u}",
> uh.prefix,
> + uh.magic, uh.header_size, uh.properties_off,
> + uh.properties_len, uh.filter_subsystem_hash,
> + uh.filter_devtype_hash, uh.filter_tag_bloom_hi,
> + uh.filter_tag_bloom_lo);Could you rewrite this tprintf using PRINT_FIELD_U and PRINT_FIELD_CSTRING primitives defined in print_fields.h, please? -- ldv
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