Re: [9fans] Plan 9 buffer overflow exploit explained in Phrack Volume 0x0b, Issue 0x3e, Phile #0x09 of 0x0f

["Russ Cox" <rsc@plan9.bell-labs.com>]

i count 36 essential system calls, up from 35 in 2e.
basically fd2path is the only change.

4e essential:

#define	BIND		2
#define	CHDIR		3
#define	CLOSE		4
#define	DUP		5
#define	ALARM		6
#define	EXEC		7
#define	EXITS		8
#define	FAUTH		10
#define	SEGBRK		12
#define	OPEN		14
#define	SLEEP		17
#define	RFORK		19
#define	PIPE		21
#define	CREATE		22
#define	FD2PATH		23
#define	BRK_		24
#define	REMOVE		25
#define	NOTIFY		28
#define	NOTED		29
#define	SEGATTACH		30
#define	SEGDETACH		31
#define	SEGFREE				32
#define	SEGFLUSH	33
#define	RENDEZVOUS	34
#define	UNMOUNT		35
#define	SEEK		39
#define	FVERSION	40
#define	ERRSTR	41
#define	STAT	42
#define	FSTAT	43
#define	WSTAT	44
#define	FWSTAT	45
#define	MOUNT	46
#define	AWAIT	47
#define PREAD	50
#define PWRITE	51

2e essential:

#define	ERRSTR		1
#define	BIND		2
#define	CHDIR		3
#define	CLOSE		4
#define	DUP		5
#define	ALARM		6
#define	EXEC		7
#define	EXITS		8
#define FSESSION	9
#define	FAUTH		10
#define	FSTAT		11
#define SEGBRK		12
#define	MOUNT		13
#define	OPEN		14
#define	READ		15
#define	SEEK		16
#define	SLEEP		17
#define	STAT		18
#define	RFORK		19
#define	WRITE		20
#define	PIPE		21
#define	CREATE		22
#define	BRK_		24
#define	REMOVE		25
#define	WSTAT		26
#define	FWSTAT		27
#define	NOTIFY		28
#define	NOTED		29
#define SEGATTACH 	30
#define SEGDETACH 	31
#define SEGFREE   	32
#define SEGFLUSH	33
#define RENDEZVOUS	34
#define UNMOUNT		35
#define	WAIT		36