ffb6607984
- Add a new KTR_STRUCT_ARRAY ktrace record type which dumps an array of structures. The structure name in the record payload is preceded by a size_t containing the size of the individual structures. Use this to replace the previous code that dumped the kevent arrays dumped for kevent(). kdump is now able to decode the kevent structures rather than dumping their contents via a hexdump. One change from before is that the 'changes' and 'events' arrays are not marked with separate 'read' and 'write' annotations in kdump output. Instead, the first array is the 'changes' array, and the second array (only present if kevent doesn't fail with an error) is the 'events' array. For kevent(), empty arrays are denoted by an entry with an array containing zero entries rather than no record. - Move kevent decoding tables from truss to libsysdecode. This adds three new functions to decode members of struct kevent: sysdecode_kevent_filter, sysdecode_kevent_flags, and sysdecode_kevent_fflags. kdump uses these helper functions to pretty-print kevent fields. - Move structure definitions for freebsd11 and freebsd32 kevent structures to <sys/event.h> so that they can be shared with userland. The 32-bit structures are only exposed if _WANT_KEVENT32 is defined. The freebsd11 structures are only exposed if _WANT_FREEBSD11_KEVENT is defined. The 32-bit freebsd11 structure requires both. - Decode freebsd11 kevent structures in truss for the compat11.kevent() system call. - Log 32-bit kevent structures via ktrace for 32-bit compat kevent() system calls. - While here, constify the 'void *data' argument to ktrstruct(). Reviewed by: kib (earlier version) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D12470
133 lines
5.2 KiB
C
133 lines
5.2 KiB
C
/*
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* See i386-fbsd.c for copyright and license terms.
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*
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* System call arguments come in several flavours:
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* Hex -- values that should be printed in hex (addresses)
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* Octal -- Same as above, but octal
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* Int -- normal integer values (file descriptors, for example)
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* LongHex -- long value that should be printed in hex
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* Name -- pointer to a NULL-terminated string.
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* BinString -- pointer to an array of chars, printed via strvisx().
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* Ptr -- pointer to some unspecified structure. Just print as hex for now.
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* Stat -- a pointer to a stat buffer. Prints a couple fields.
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* Stat11 -- a pointer to a freebsd 11 stat buffer. Prints a couple fields.
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* StatFs -- a pointer to a statfs buffer. Prints a few fields.
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* Ioctl -- an ioctl command. Woefully limited.
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* Quad -- a double-word value. e.g., lseek(int, offset_t, int)
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* Signal -- a signal number. Prints the signal name (SIGxxx)
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* Sockaddr -- a pointer to a struct sockaddr. Prints symbolic AF, and IP:Port
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* StringArray -- a pointer to an array of string pointers.
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* Timespec -- a pointer to a struct timespec. Prints both elements.
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* Timeval -- a pointer to a struct timeval. Prints both elements.
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* Timeval2 -- a pointer to two struct timevals. Prints both elements of both.
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* Itimerval -- a pointer to a struct itimerval. Prints all elements.
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* Pollfd -- a pointer to an array of struct pollfd. Prints .fd and .events.
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* Fd_set -- a pointer to an array of fd_set. Prints the fds that are set.
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* Sigaction -- a pointer to a struct sigaction. Prints all elements.
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* Sigset -- a pointer to a sigset_t. Prints the signals that are set.
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* Sigprocmask -- the first argument to sigprocmask(). Prints the name.
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* Kevent -- a pointer to an array of struct kevents. Prints all elements.
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* Pathconf -- the 2nd argument of pathconf().
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* Utrace -- utrace(2) buffer.
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* CapRights -- a pointer to a cap_rights_t. Prints all set capabilities.
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*
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* In addition, the pointer types (String, Ptr) may have OUT masked in --
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* this means that the data is set on *return* from the system call -- or
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* IN (meaning that the data is passed *into* the system call).
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*/
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/*
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* $FreeBSD$
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*/
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enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Stat11, Ioctl,
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Quad, Signal, Sockaddr, StringArray, Timespec, Timeval, Itimerval,
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Pollfd, Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres,
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Sigset, Sigprocmask, StatFs, Kevent, Sockdomain, Socktype, Open,
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Fcntlflag, Rusage, RusageWho, BinString, Shutdown, Resource, Rlimit,
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Timeval2, Pathconf, Rforkflags, ExitStatus, Waitoptions, Idtype, Procctl,
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LinuxSockArgs, Umtxop, Atfd, Atflags, Timespec2, Accessmode, Long,
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Sysarch, ExecArgs, ExecEnv, PipeFds, QuadHex, Utrace, IntArray, Pipe2,
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CapFcntlRights, Fadvice, FileFlags, Flockop, Getfsstatmode, Kldsymcmd,
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Kldunloadflags, Sizet, Madvice, Socklent, Sockprotocol, Sockoptlevel,
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Sockoptname, Msgflags, CapRights, PUInt, PQuadHex, Acltype,
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Extattrnamespace, Minherit, Mlockall, Mountflags, Msync, Priowhich,
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Ptraceop, Quotactlcmd, Reboothowto, Rtpriofunc, Schedpolicy, Schedparam,
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PSig, Siginfo, Kevent11,
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CloudABIAdvice, CloudABIClockID, ClouduABIFDSFlags,
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CloudABIFDStat, CloudABIFileStat, CloudABIFileType,
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CloudABIFSFlags, CloudABILookup, CloudABIMFlags, CloudABIMProt,
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CloudABIMSFlags, CloudABIOFlags, CloudABISDFlags,
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CloudABISignal, CloudABISockStat, CloudABISSFlags,
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CloudABITimestamp, CloudABIULFlags, CloudABIWhence };
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#define ARG_MASK 0xff
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#define OUT 0x100
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#define IN /*0x20*/0
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struct syscall_args {
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enum Argtype type;
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int offset;
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};
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struct syscall {
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STAILQ_ENTRY(syscall) entries;
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const char *name;
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u_int ret_type; /* 0, 1, or 2 return values */
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u_int nargs; /* actual number of meaningful arguments */
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/* Hopefully, no syscalls with > 10 args */
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struct syscall_args args[10];
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struct timespec time; /* Time spent for this call */
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int ncalls; /* Number of calls */
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int nerror; /* Number of calls that returned with error */
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bool unknown; /* Unknown system call */
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};
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struct syscall *get_syscall(struct threadinfo *, u_int, u_int);
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char *print_arg(struct syscall_args *, unsigned long*, long *, struct trussinfo *);
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/*
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* Linux Socket defines
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*/
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#define LINUX_SOCKET 1
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#define LINUX_BIND 2
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#define LINUX_CONNECT 3
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#define LINUX_LISTEN 4
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#define LINUX_ACCEPT 5
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#define LINUX_GETSOCKNAME 6
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#define LINUX_GETPEERNAME 7
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#define LINUX_SOCKETPAIR 8
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#define LINUX_SEND 9
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#define LINUX_RECV 10
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#define LINUX_SENDTO 11
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#define LINUX_RECVFROM 12
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#define LINUX_SHUTDOWN 13
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#define LINUX_SETSOCKOPT 14
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#define LINUX_GETSOCKOPT 15
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#define LINUX_SENDMSG 16
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#define LINUX_RECVMSG 17
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#define PAD_(t) (sizeof(register_t) <= sizeof(t) ? \
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0 : sizeof(register_t) - sizeof(t))
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define PADL_(t) 0
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#define PADR_(t) PAD_(t)
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#else
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#define PADL_(t) PAD_(t)
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#define PADR_(t) 0
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#endif
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typedef int l_int;
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typedef uint32_t l_ulong;
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struct linux_socketcall_args {
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char what_l_[PADL_(l_int)]; l_int what; char what_r_[PADR_(l_int)];
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char args_l_[PADL_(l_ulong)]; l_ulong args; char args_r_[PADR_(l_ulong)];
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};
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void init_syscalls(void);
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void print_syscall(struct trussinfo *);
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void print_syscall_ret(struct trussinfo *, int, long *);
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void print_summary(struct trussinfo *trussinfo);
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