Red Hat ENTERPRISE LINUX 3 - SECURITY GUIDE, Manual

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Appendix D. gdb Remote Serial Protocol 351
D.7.13. File-I/O Examples
Example sequence of a write call, file descriptor 3, buffer is at target address 0x1234, 6 bytes should
be written:
d
-
Fwrite,3,1234,6
request memory read from target
-
e
m1234,6
d
- XXXXXX
return "6 bytes written"
-
e
F6
Example sequence of a read call, file descriptor 3, buffer is at target address 0x1234, 6 bytes should
be read:
d
-
Fread,3,1234,6
request memory write to target
-
e
X1234,6:XXXXXX
return "6 bytes read"
-
e
F6
Example sequence of a read call, call fails on the host due to invalid file descriptor (EBADF):
d
-
Fread,3,1234,6
-
e
F-1,9
Example sequence of a read call, user presses Ctrl-C before syscall on host is called:
d
-
Fread,3,1234,6
-
e
F-1,4,C
d
-
T02
Example sequence of a read call, user presses Ctrl-C after syscall on host is called:
d
-
Fread,3,1234,6
-
e
X1234,6:XXXXXX
d
-
T02