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from ptrace.tools import readBits, formatBits
from ptrace.signames import signalName
from ptrace.ctypes_tools import uint2int
# From /usr/include/bits/mman.h (Ubuntu Feisty, i386)
MMAP_PROT_BITMASK = (
(1, "PROT_READ"),
(2, "PROT_WRITE"),
(4, "PROT_EXEC"),
(0x01000000, "PROT_GROWSDOWN"),
(0x02000000, "PROT_GROWSUP"),
)
def formatMmapProt(argument):
return formatBits(argument.value, MMAP_PROT_BITMASK, "PROT_NONE")
# From /usr/include/bits/mman.h (Ubuntu Feisty, i386)
ACCESS_MODE_BITMASK = (
(1, "X_OK"),
(2, "W_OK"),
(4, "R_OK"),
)
def formatAccessMode(argument):
return formatBits(argument.value, ACCESS_MODE_BITMASK, "F_OK")
# From /usr/include/bits/fcntl.h (Ubuntu Feisty, i386)
OPEN_FLAGS_BITMASK = [
(0o1, "O_WRONLY"),
(0o2, "O_RDWR"),
(0o100, "O_CREAT"),
(0o200, "O_EXCL"),
(0o400, "O_NOCTTY"),
(0o1000, "O_TRUNC"),
(0o2000, "O_APPEND"),
(0o4000, "O_NONBLOCK"),
(0o10000, "O_SYNC"),
(0o20000, "O_ASYNC"),
(0o40000, "O_DIRECT"),
(0o100000, "O_LARGEFILE"),
(0o200000, "O_DIRECTORY"),
(0o400000, "O_NOFOLLOW"),
(0o1000000, "O_NOATIME"),
(0o2000000, "O_CLOEXEC"),
(0o10000000, "O_PATH"), # Linux 2.6.39
(0o20200000, "O_TMPFILE"), # Linux 3.11
]
def formatOpenFlags(argument):
value = argument.value
flags = readBits(int(value), OPEN_FLAGS_BITMASK)
# Add default access mode if neither of the others are present.
if not flags or flags[0] not in ("O_WRONLY", "O_RDWR"):
flags.insert(0, "O_RDONLY")
text = "|".join(flags)
if value:
text = "%s (%s)" % (text, oct(argument.value))
return text
OPEN_MODE_BITMASK = [
(0o0400, "S_IRUSR"),
(0o0200, "S_IWUSR"),
(0o0100, "S_IXUSR"),
(0o0040, "S_IRGRP"),
(0o0020, "S_IWGRP"),
(0o0010, "S_IXGRP"),
(0o0004, "S_IROTH"),
(0o0002, "S_IWOTH"),
(0o0001, "S_IXOTH"),
]
def formatOpenMode(argument):
value = argument.value
flags = readBits(int(value), OPEN_MODE_BITMASK)
text = "|".join(flags)
# Overwrite text, add it depending on verbosity later
if value:
text = "%s" % oct(argument.value)
return text
CLONE_FLAGS_BITMASK = (
(0x00000100, "CLONE_VM"),
(0x00000200, "CLONE_FS"),
(0x00000400, "CLONE_FILES"),
(0x00000800, "CLONE_SIGHAND"),
(0x00002000, "CLONE_PTRACE"),
(0x00004000, "CLONE_VFORK"),
(0x00008000, "CLONE_PARENT"),
(0x00010000, "CLONE_THREAD"),
(0x00020000, "CLONE_NEWNS"),
(0x00040000, "CLONE_SYSVSEM"),
(0x00080000, "CLONE_SETTLS"),
(0x00100000, "CLONE_PARENT_SETTID"),
(0x00200000, "CLONE_CHILD_CLEARTID"),
(0x00400000, "CLONE_DETACHED"),
(0x00800000, "CLONE_UNTRACED"),
(0x01000000, "CLONE_CHILD_SETTID"),
(0x02000000, "CLONE_STOPPED"),
(0x04000000, "CLONE_NEWUTS"),
(0x08000000, "CLONE_NEWIPC"),
)
def formatCloneFlags(argument):
flags = argument.value
bits = readBits(flags, CLONE_FLAGS_BITMASK)
signum = flags & 0xFF
if signum:
bits.insert(0, signalName(signum))
if bits:
bits = "%s" % ("|".join(bits))
return "<%s> (%s)" % (bits, str(flags))
else:
return str(flags)
AT_FDCWD = -100
def formatDirFd(argument):
value = uint2int(argument.value)
return "AT_FDCWD" if value == AT_FDCWD else str(value)
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