diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2012-10-10 14:45:14 +0100 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2013-02-20 13:45:11 +0100 |
| commit | 82fc713658c82cbbc577e6f8fa6cec67b911ba6e (patch) | |
| tree | 2b38dcc179ae4cc03cdbfdfd85c3c3d8b4b40fc7 | |
| parent | 695e274cf7f24c596258827ee202d29ff735d9b9 (diff) | |
link: Use linkat if arch does not have the link syscall
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
| -rw-r--r-- | include/unistd.h | 1 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/link.c | 9 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/linkat.c | 1 |
3 files changed, 11 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h index 137b0db0a..90d345972 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -887,6 +887,7 @@ extern int link (const char *__from, const char *__to) extern int linkat (int __fromfd, const char *__from, int __tofd, const char *__to, int __flags) __THROW __nonnull ((2, 4)) __wur; +libc_hidden_proto(linkat) #endif #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K diff --git a/libc/sysdeps/linux/common/link.c b/libc/sysdeps/linux/common/link.c index b5e5536d5..86d4cfabc 100644 --- a/libc/sysdeps/linux/common/link.c +++ b/libc/sysdeps/linux/common/link.c @@ -9,4 +9,13 @@ #include <sys/syscall.h> #include <unistd.h> + +#if defined __NR_linkat && !defined __NR_link +# include <fcntl.h> +int link(const char *oldpath, const char *newpath) +{ + return linkat(AT_FDCWD, oldpath, AT_FDCWD, newpath, 0); +} +#else _syscall2(int, link, const char *, oldpath, const char *, newpath) +#endif diff --git a/libc/sysdeps/linux/common/linkat.c b/libc/sysdeps/linux/common/linkat.c index 9abe9ec71..26a3d08e0 100644 --- a/libc/sysdeps/linux/common/linkat.c +++ b/libc/sysdeps/linux/common/linkat.c @@ -11,6 +11,7 @@ #ifdef __NR_linkat _syscall5(int, linkat, int, fromfd, const char *, from, int, tofd, const char *, to, int, flags) +libc_hidden_def(linkat) #else /* should add emulation with link() and /proc/self/fd/ ... */ #endif |