diff options
| author | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-09-24 09:25:06 +0000 |
|---|---|---|
| committer | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-09-24 09:25:06 +0000 |
| commit | 64f0ce4c0d2c45ff69bfc09092649ee3674f6592 (patch) | |
| tree | 6f2fd14815380812a6fccd88698667488bb939a0 /linux-user | |
| parent | 722183f69b1dc6c1c9f5f5c250622ca5a71cdb3e (diff) | |
linux-user linkat() syscall, by Thayne Harbaugh.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3223 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index eb5a39adc2..427c094f68 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -143,6 +143,7 @@ type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \ #define __NR_sys_getcwd1 __NR_getcwd #define __NR_sys_getdents __NR_getdents #define __NR_sys_getdents64 __NR_getdents64 +#define __NR_sys_linkat __NR_linkat #define __NR_sys_mkdirat __NR_mkdirat #define __NR_sys_mknodat __NR_mknodat #define __NR_sys_openat __NR_openat @@ -176,6 +177,10 @@ _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count); #endif _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res, uint, wh); +#if defined(TARGET_NR_linkat) && defined(__NR_linkat) +_syscall5(int,sys_linkat,int,olddirfd,const char *,oldpath, + int,newdirfd,const char *,newpath,int,flags) +#endif #if defined(TARGET_NR_mkdirat) && defined(__NR_mkdirat) _syscall3(int,sys_mkdirat,int,dirfd,const char *,pathname,mode_t,mode) #endif @@ -2581,6 +2586,28 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, unlock_user(p, arg1, 0); } break; +#if defined(TARGET_NR_linkat) && defined(__NR_linkat) + case TARGET_NR_linkat: + if (!arg2 || !arg4) { + ret = -EFAULT; + goto fail; + } + { + void * p2 = NULL; + p = lock_user_string(arg2); + p2 = lock_user_string(arg4); + if (!access_ok(VERIFY_READ, p, 1) + || !access_ok(VERIFY_READ, p2, 1)) + ret = -EFAULT; + else + ret = get_errno(sys_linkat(arg1, p, arg3, p2, arg5)); + if (p2) + unlock_user(p, arg2, 0); + if (p) + unlock_user(p2, arg4, 0); + } + break; +#endif case TARGET_NR_unlink: p = lock_user_string(arg1); ret = get_errno(unlink(p)); |