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linux-user openat() syscall, by Thayne Harbaugh.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3217 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-09-24 09:21:55 +00:00
parent 8dd77cca03
commit 8242483226
1 changed files with 22 additions and 0 deletions
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22
linux-user/syscall.c
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@ -142,6 +142,7 @@ type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
#define __NR_sys_getcwd1 __NR_getcwd #define __NR_sys_getcwd1 __NR_getcwd
#define __NR_sys_getdents __NR_getdents #define __NR_sys_getdents __NR_getdents
#define __NR_sys_getdents64 __NR_getdents64 #define __NR_sys_getdents64 __NR_getdents64
#define __NR_sys_openat __NR_openat
#define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
#define __NR_sys_syslog __NR_syslog #define __NR_sys_syslog __NR_syslog
#define __NR_sys_tgkill __NR_tgkill #define __NR_sys_tgkill __NR_tgkill
@ -166,6 +167,9 @@ _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
#endif #endif
_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh); loff_t *, res, uint, wh);
#if defined(TARGET_NR_openat) && defined(__NR_openat)
_syscall4(int,sys_openat,int,dirfd,const char *,pathname,int,flags,mode_t,mode)
#endif
_syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo) _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
_syscall3(int,sys_syslog,int,type,char*,bufp,int,len) _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) #if defined(TARGET_NR_tgkill) && defined(__NR_tgkill)
@ -2500,6 +2504,24 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
arg3)); arg3));
unlock_user(p, arg1, 0); unlock_user(p, arg1, 0);
break; break;
#if defined(TARGET_NR_openat) && defined(__NR_openat)
case TARGET_NR_openat:
if (!arg2) {
ret = -EFAULT;
goto fail;
}
p = lock_user_string(arg2);
if (!access_ok(VERIFY_READ, p, 1))
ret = -EFAULT;
else
ret = get_errno(sys_openat(arg1,
path(p),
target_to_host_bitmask(arg3, fcntl_flags_tbl),
arg4));
if (p)
unlock_user(p, arg2, 0);
break;
#endif
case TARGET_NR_close: case TARGET_NR_close:
ret = get_errno(close(arg1)); ret = get_errno(close(arg1));
break; break;