fluencelabs/musl
1
0
Fork 0
mirror of https://github.com/fluencelabs/musl synced 2025-07-30 22:01:57 +00:00
Code Issues Projects Releases Wiki Activity

support kernels with no SYS_open syscall, only SYS_openat

Browse Source 
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.
This commit is contained in:
Rich Felker
2014-05-24 22:54:05 -04:00
parent 44d28e5512
commit 594c827a22
9 changed files with 26 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/internal/syscall.h
View File

@@ -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__))