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| author | Andreas Schwab <schwab@suse.de> | 2018-01-23 11:53:31 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2018-01-23 14:27:33 +0100 |
| commit | 95d0307cc10ca3df879c1be519f1ad650efb20a8 (patch) | |
| tree | 1033715c4dd14f81b0bdb8422a5e394774008faa /linux-user | |
| parent | 9c4bbee9e3b83544257e82566342c29e15a88637 (diff) | |
| download | qemu-95d0307cc10ca3df879c1be519f1ad650efb20a8.zip qemu-95d0307cc10ca3df879c1be519f1ad650efb20a8.tar.gz qemu-95d0307cc10ca3df879c1be519f1ad650efb20a8.tar.bz2 | |
linux-user: implement renameat2
This is needed for new architectures like RISC-V which do not provide any
other rename-like syscall.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvm607su9qs.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 104408c..7437894 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -600,6 +600,24 @@ static int sys_utimensat(int dirfd, const char *pathname, #endif #endif /* TARGET_NR_utimensat */ +#ifdef TARGET_NR_renameat2 +#if defined(__NR_renameat2) +#define __NR_sys_renameat2 __NR_renameat2 +_syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd, + const char *, new, unsigned int, flags) +#else +static int sys_renameat2(int oldfd, const char *old, + int newfd, const char *new, int flags) +{ + if (flags == 0) { + return renameat(oldfd, old, newfd, new); + } + errno = ENOSYS; + return -1; +} +#endif +#endif /* TARGET_NR_renameat2 */ + #ifdef CONFIG_INOTIFY #include <sys/inotify.h> @@ -8426,6 +8444,22 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; #endif +#if defined(TARGET_NR_renameat2) + case TARGET_NR_renameat2: + { + void *p2; + p = lock_user_string(arg2); + p2 = lock_user_string(arg4); + if (!p || !p2) { + ret = -TARGET_EFAULT; + } else { + ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5)); + } + unlock_user(p2, arg4, 0); + unlock_user(p, arg2, 0); + } + break; +#endif #ifdef TARGET_NR_mkdir case TARGET_NR_mkdir: if (!(p = lock_user_string(arg1))) |