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

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3221 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-09-24 09:24:11 +00:00
parent ccfa72b7da
commit 8170f56baf
1 changed files with 19 additions and 0 deletions
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19
linux-user/syscall.c
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@ -150,6 +150,7 @@ type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
#define __NR_sys_syslog __NR_syslog
#define __NR_sys_tgkill __NR_tgkill
#define __NR_sys_tkill __NR_tkill
#define __NR_sys_unlinkat __NR_unlinkat
#if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
#define __NR__llseek __NR_lseek
@ -198,6 +199,9 @@ _syscall1(int,exit_group,int,error_code)
#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
_syscall1(int,set_tid_address,int *,tidptr)
#endif
#if defined(TARGET_NR_unlinkat) && defined(__NR_unlinkat)
_syscall3(int,sys_unlinkat,int,dirfd,const char *,pathname,int,flags)
#endif
extern int personality(int);
extern int flock(int, int);
@ -2577,6 +2581,21 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
ret = get_errno(unlink(p));
unlock_user(p, arg1, 0);
break;
#if defined(TARGET_NR_unlinkat) && defined(__NR_unlinkat)
case TARGET_NR_unlinkat:
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_unlinkat(arg1, p, arg3));
if (p)
unlock_user(p, arg2, 0);
break;
#endif
case TARGET_NR_execve:
{
char **argp, **envp;