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authorRich Felker <dalias@aerifal.cx>2014-05-24 22:54:05 -0400
committerRich Felker <dalias@aerifal.cx>2014-05-24 22:54:05 -0400
commit594c827a22124ae550b9a877b8188e0898dff8db (patch)
treef48f403bf1b6aa543f20783fa501c573aaa3a63e /src/internal/syscall.h
parent44d28e55121f9a7d736df59c09b963e17c8c4cfa (diff)
downloadmusl-594c827a22124ae550b9a877b8188e0898dff8db.tar.gz
support kernels with no SYS_open syscall, only SYS_openat
open is handled specially because it is used from so many places, in so many variants (2 or 3 arguments, setting errno or not, and cancellable or not). trying to do it as a function would not only increase bloat, but would also risk subtle breakage. this is the first step towards supporting "new" archs where linux lacks "old" syscalls.
Diffstat (limited to 'src/internal/syscall.h')
-rw-r--r--src/internal/syscall.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/internal/syscall.h b/src/internal/syscall.h
index 914b0d18..9dd92995 100644
--- a/src/internal/syscall.h
+++ b/src/internal/syscall.h
@@ -187,3 +187,21 @@ long __syscall_ret(unsigned long), __syscall(syscall_arg_t, ...),
#define __SC_accept4 18
#define __SC_recvmmsg 19
#define __SC_sendmmsg 20
+
+#ifdef SYS_open
+#define __sys_open2(x,pn,fl) __syscall2(SYS_open, pn, (fl)|O_LARGEFILE)
+#define __sys_open3(x,pn,fl,mo) __syscall3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
+#define __sys_open_cp2(x,pn,fl) __syscall_cp2(SYS_open, pn, (fl)|O_LARGEFILE)
+#define __sys_open_cp3(x,pn,fl,mo) __syscall_cp3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
+#else
+#define __sys_open2(x,pn,fl) __syscall2(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
+#define __sys_open3(x,pn,fl,mo) __syscall3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
+#define __sys_open_cp2(x,pn,fl) __syscall_cp2(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
+#define __sys_open_cp3(x,pn,fl,mo) __syscall_cp3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
+#endif
+
+#define __sys_open(...) __SYSCALL_DISP(__sys_open,,__VA_ARGS__)
+#define sys_open(...) __syscall_ret(__sys_open(__VA_ARGS__))
+
+#define __sys_open_cp(...) __SYSCALL_DISP(__sys_open_cp,,__VA_ARGS__)
+#define sys_open_cp(...) __syscall_ret(__sys_open_cp(__VA_ARGS__))