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syscall overhaul part two - unify public and internal syscall interface

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with this patch, the syscallN() functions are no longer needed; a
variadic syscall() macro allows syscalls with anywhere from 0 to 6
arguments to be made with a single macro name. also, manually casting
each non-integer argument with (long) is no longer necessary; the
casts are hidden in the macros.

some source files which depended on being able to define the old macro
SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall()
instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL
have also been changed.

x86_64 has not been tested, and may need a follow-up commit to fix any
minor bugs/oversights.
This commit is contained in:
Rich Felker 2011-03-19 21:36:10 -04:00
commit 685e40bb09
26 changed files with 275 additions and 316 deletions
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7
arch/i386/bits/fcntl.h
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@ -14,12 +14,15 @@
#define O_NOFOLLOW 0400000
#define O_CLOEXEC 02000000
#ifdef _GNU_SOURCE
#define O_NDELAY O_NONBLOCK
/* Extensions, but in the reserved namespace, so OK */
#define O_ASYNC 020000
#define O_DIRECT 040000
#define O_LARGEFILE 0100000
#define O_NOATIME 01000000
#define O_NDELAY O_NONBLOCK
#define F_DUPFD_CLOEXEC 1030
#ifdef _GNU_SOURCE
#define FAPPENT O_APPEND
#define FFSYNC O_FSYNC
#define FASYNC O_ASYNC