diff options
Diffstat (limited to 'src/syscall.h')
| -rw-r--r-- | src/syscall.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/src/syscall.h b/src/syscall.h index a2da030..6a0a76c 100644 --- a/src/syscall.h +++ b/src/syscall.h @@ -1,5 +1,6 @@ #include <sys/syscall.h> #include <unistd.h> +#include <errno.h> #define _SYMSTR(str) #str #define SYMSTR(str) _SYMSTR(str) @@ -29,6 +30,37 @@ #elif defined(__aarch64__) #include "syscall-arm64.h" #else -#warning "using generic syscall method" -#include "syscall-generic.h" +#warning "using system call numbers from sys/syscall.h" #endif + +#define _body_io_syscall(sname, args...) \ +{ \ + int ret, saved_errno; \ + saved_errno = errno; \ + ret= syscall(__NR_##sname, ## args); \ + if (ret < 0) { \ + ret = -errno; \ + errno = saved_errno; \ + } \ + return ret; \ +} + +#define io_syscall1(type,fname,sname,type1,arg1) \ +type fname(type1 arg1) \ +_body_io_syscall(sname, (long)arg1) + +#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \ +type fname(type1 arg1,type2 arg2) \ +_body_io_syscall(sname, (long)arg1, (long)arg2) + +#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \ +type fname(type1 arg1,type2 arg2,type3 arg3) \ +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3) + +#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ +type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4) + +#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, type5,arg5) \ +type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4, (long)arg5) |