gwj / at91sam9263 · Commits

Commit 824248322670885c95213c81a20551ab2434228f

Authored by ths
1 parent 8dd77cca

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


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3217 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 22 additions and 0 deletions
linux-user/syscall.c
  View file @8242483
... ... @@ -142,6 +142,7 @@ type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
142 142 #define __NR_sys_getcwd1 __NR_getcwd
143 143 #define __NR_sys_getdents __NR_getdents
144 144 #define __NR_sys_getdents64 __NR_getdents64
  145 +#define __NR_sys_openat __NR_openat
145 146 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
146 147 #define __NR_sys_syslog __NR_syslog
147 148 #define __NR_sys_tgkill __NR_tgkill
... ... @@ -166,6 +167,9 @@ _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
166 167 #endif
167 168 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
168 169 loff_t *, res, uint, wh);
  170 +#if defined(TARGET_NR_openat) && defined(__NR_openat)
  171 +_syscall4(int,sys_openat,int,dirfd,const char *,pathname,int,flags,mode_t,mode)
  172 +#endif
169 173 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
170 174 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
171 175 #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,
2500 2504 arg3));
2501 2505 unlock_user(p, arg1, 0);
2502 2506 break;
  2507 +#if defined(TARGET_NR_openat) && defined(__NR_openat)
  2508 + case TARGET_NR_openat:
  2509 + if (!arg2) {
  2510 + ret = -EFAULT;
  2511 + goto fail;
  2512 + }
  2513 + p = lock_user_string(arg2);
  2514 + if (!access_ok(VERIFY_READ, p, 1))
  2515 + ret = -EFAULT;
  2516 + else
  2517 + ret = get_errno(sys_openat(arg1,
  2518 + path(p),
  2519 + target_to_host_bitmask(arg3, fcntl_flags_tbl),
  2520 + arg4));
  2521 + if (p)
  2522 + unlock_user(p, arg2, 0);
  2523 + break;
  2524 +#endif
2503 2525 case TARGET_NR_close:
2504 2526 ret = get_errno(close(arg1));
2505 2527 break;
... ...