27ec61a437
Restructure this script so that it generates a header of tables instead of a source file. The tables are included in a flags.c source file which provides functions to decode various system call arguments. For functions that decode an enumeration, the function returns a pointer to a string for known values and NULL for unknown values. For functions that do more complex decoding (typically of a bitmask), the function accepts a pointer to a FILE object (open_memstream() can be used as a string builder) to which decoded values are written. If the function operates on a bitmask, the function returns true if any bits were decoded or false if the entire value was valid. Additionally, the third argument accepts a pointer to a value to which any undecoded bits are stored. This pointer can be NULL if the caller doesn't care about remaining bits. Convert kdump over to using decoder functions from libsysdecode instead of mksubr. truss also uses decoders from libsysdecode instead of private lookup tables, though lookup tables for objects not decoded by kdump remain in truss for now. Eventually most of these tables should move into libsysdecode as the automated table generation approach from mksubr is less stale than the static tables in truss. Some changes have been made to truss and kdump output: - The flags passed to open() are now properly decoded in that one of O_RDONLY, O_RDWR, O_WRONLY, or O_EXEC is always included in a decoded mask. - Optional arguments to open(), openat(), and fcntl() are only printed in kdump if they exist (e.g. the mode is only printed for open() if O_CREAT is set in the flags). - Print argument to F_GETLK/SETLK/SETLKW in kdump as a pointer, not int. - Include all procctl() commands. - Correctly decode pipe2() flags in truss by not assuming full open()-like flags with O_RDONLY, etc. - Decode file flags passed to *chflags() as file flags (UF_* and SF_*) rather than as a file mode. - Fix decoding of quotactl() commands by splitting out the two command components instead of assuming the raw command value matches the primary command component. In addition, truss and kdump now build without triggering any warnings. All of the sysdecode manpages now include the required headers in the synopsis. Reviewed by: kib (several older versions), wblock (manpages) MFC after: 2 months Differential Revision: https://reviews.freebsd.org/D7847
124 lines
4.6 KiB
C
124 lines
4.6 KiB
C
/*
|
|
* See i386-fbsd.c for copyright and license terms.
|
|
*
|
|
* System call arguments come in several flavours:
|
|
* Hex -- values that should be printed in hex (addresses)
|
|
* Octal -- Same as above, but octal
|
|
* Int -- normal integer values (file descriptors, for example)
|
|
* LongHex -- long value that should be printed in hex
|
|
* Name -- pointer to a NULL-terminated string.
|
|
* BinString -- pointer to an array of chars, printed via strvisx().
|
|
* Ptr -- pointer to some unspecified structure. Just print as hex for now.
|
|
* Stat -- a pointer to a stat buffer. Prints a couple fields.
|
|
* StatFs -- a pointer to a statfs buffer. Prints a few fields.
|
|
* Ioctl -- an ioctl command. Woefully limited.
|
|
* Quad -- a double-word value. e.g., lseek(int, offset_t, int)
|
|
* Signal -- a signal number. Prints the signal name (SIGxxx)
|
|
* Sockaddr -- a pointer to a struct sockaddr. Prints symbolic AF, and IP:Port
|
|
* StringArray -- a pointer to an array of string pointers.
|
|
* Timespec -- a pointer to a struct timespec. Prints both elements.
|
|
* Timeval -- a pointer to a struct timeval. Prints both elements.
|
|
* Timeval2 -- a pointer to two struct timevals. Prints both elements of both.
|
|
* Itimerval -- a pointer to a struct itimerval. Prints all elements.
|
|
* Pollfd -- a pointer to an array of struct pollfd. Prints .fd and .events.
|
|
* Fd_set -- a pointer to an array of fd_set. Prints the fds that are set.
|
|
* Sigaction -- a pointer to a struct sigaction. Prints all elements.
|
|
* Sigset -- a pointer to a sigset_t. Prints the signals that are set.
|
|
* Sigprocmask -- the first argument to sigprocmask(). Prints the name.
|
|
* Kevent -- a pointer to an array of struct kevents. Prints all elements.
|
|
* Pathconf -- the 2nd argument of pathconf().
|
|
* Utrace -- utrace(2) buffer.
|
|
*
|
|
* In addition, the pointer types (String, Ptr) may have OUT masked in --
|
|
* this means that the data is set on *return* from the system call -- or
|
|
* IN (meaning that the data is passed *into* the system call).
|
|
*/
|
|
/*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Ioctl,
|
|
Quad, Signal, Sockaddr, StringArray, Timespec, Timeval, Itimerval,
|
|
Pollfd, Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres,
|
|
Sigset, Sigprocmask, StatFs, Kevent, Sockdomain, Socktype, Open,
|
|
Fcntlflag, Rusage, BinString, Shutdown, Resource, Rlimit, Timeval2,
|
|
Pathconf, Rforkflags, ExitStatus, Waitoptions, Idtype, Procctl,
|
|
LinuxSockArgs, Umtxop, Atfd, Atflags, Timespec2, Accessmode, Long,
|
|
Sysarch, ExecArgs, ExecEnv, PipeFds, QuadHex, Utrace, IntArray, Pipe2,
|
|
|
|
CloudABIAdvice, CloudABIClockID, ClouduABIFDSFlags,
|
|
CloudABIFDStat, CloudABIFileStat, CloudABIFileType,
|
|
CloudABIFSFlags, CloudABILookup, CloudABIMFlags, CloudABIMProt,
|
|
CloudABIMSFlags, CloudABIOFlags, CloudABISDFlags,
|
|
CloudABISignal, CloudABISockStat, CloudABISSFlags,
|
|
CloudABITimestamp, CloudABIULFlags, CloudABIWhence };
|
|
|
|
#define ARG_MASK 0xff
|
|
#define OUT 0x100
|
|
#define IN /*0x20*/0
|
|
|
|
struct syscall_args {
|
|
enum Argtype type;
|
|
int offset;
|
|
};
|
|
|
|
struct syscall {
|
|
STAILQ_ENTRY(syscall) entries;
|
|
const char *name;
|
|
u_int ret_type; /* 0, 1, or 2 return values */
|
|
u_int nargs; /* actual number of meaningful arguments */
|
|
/* Hopefully, no syscalls with > 10 args */
|
|
struct syscall_args args[10];
|
|
struct timespec time; /* Time spent for this call */
|
|
int ncalls; /* Number of calls */
|
|
int nerror; /* Number of calls that returned with error */
|
|
};
|
|
|
|
struct syscall *get_syscall(const char *, int nargs);
|
|
char *print_arg(struct syscall_args *, unsigned long*, long *, struct trussinfo *);
|
|
|
|
/*
|
|
* Linux Socket defines
|
|
*/
|
|
#define LINUX_SOCKET 1
|
|
#define LINUX_BIND 2
|
|
#define LINUX_CONNECT 3
|
|
#define LINUX_LISTEN 4
|
|
#define LINUX_ACCEPT 5
|
|
#define LINUX_GETSOCKNAME 6
|
|
#define LINUX_GETPEERNAME 7
|
|
#define LINUX_SOCKETPAIR 8
|
|
#define LINUX_SEND 9
|
|
#define LINUX_RECV 10
|
|
#define LINUX_SENDTO 11
|
|
#define LINUX_RECVFROM 12
|
|
#define LINUX_SHUTDOWN 13
|
|
#define LINUX_SETSOCKOPT 14
|
|
#define LINUX_GETSOCKOPT 15
|
|
#define LINUX_SENDMSG 16
|
|
#define LINUX_RECVMSG 17
|
|
|
|
#define PAD_(t) (sizeof(register_t) <= sizeof(t) ? \
|
|
0 : sizeof(register_t) - sizeof(t))
|
|
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
#define PADL_(t) 0
|
|
#define PADR_(t) PAD_(t)
|
|
#else
|
|
#define PADL_(t) PAD_(t)
|
|
#define PADR_(t) 0
|
|
#endif
|
|
|
|
typedef int l_int;
|
|
typedef uint32_t l_ulong;
|
|
|
|
struct linux_socketcall_args {
|
|
char what_l_[PADL_(l_int)]; l_int what; char what_r_[PADR_(l_int)];
|
|
char args_l_[PADL_(l_ulong)]; l_ulong args; char args_r_[PADR_(l_ulong)];
|
|
};
|
|
|
|
void init_syscalls(void);
|
|
void print_syscall(struct trussinfo *);
|
|
void print_syscall_ret(struct trussinfo *, int, long *);
|
|
void print_summary(struct trussinfo *trussinfo);
|