sh: Avoid exporting unimplemented syscalls.

Now that userspace is making use of kernel-provided sanitized headers for
working out supported interfaces, we need to be a bit more diligent with
matching the syscall definitions with their actual wiring/support state.

In theory it shouldn't hurt anything since sys_ni_syscall will ultimately
do the right thing, but there's also not much need to lie about legacy
x86 syscalls that we've never supported.

This tightens things up a bit for uClibc at least.

Suggested-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

4 files changed, 71 insertions, 70 deletions

diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h
index 152b8627a184..2b83a4980667 100644
--- a/arch/sh/include/asm/unistd_32.h
+++ b/arch/sh/include/asm/unistd_32.h
@@ -26,7 +26,7 @@
 #define __NR_mknod               14
 #define __NR_chmod               15
 #define __NR_lchown              16
-#define __NR_break               17
+                                 /* 17 was sys_break */
 #define __NR_oldstat             18
 #define __NR_lseek               19
 #define __NR_getpid              20
@@ -40,11 +40,11 @@
 #define __NR_oldfstat            28
 #define __NR_pause               29
 #define __NR_utime               30
-#define __NR_stty                31
-#define __NR_gtty                32
+                                 /* 31 was sys_stty */
+                                 /* 32 was sys_gtty */
 #define __NR_access              33
 #define __NR_nice                34
-#define __NR_ftime               35
+                                 /* 35 was sys_ftime */
 #define __NR_sync                36
 #define __NR_kill                37
 #define __NR_rename              38
@@ -53,7 +53,7 @@
 #define __NR_dup                 41
 #define __NR_pipe                42
 #define __NR_times               43
-#define __NR_prof                44
+                                 /* 44 was sys_prof */
 #define __NR_brk                 45
 #define __NR_setgid              46
 #define __NR_getgid              47
@@ -62,13 +62,13 @@
 #define __NR_getegid             50
 #define __NR_acct                51
 #define __NR_umount2             52
-#define __NR_lock                53
+                                 /* 53 was sys_lock */
 #define __NR_ioctl               54
 #define __NR_fcntl               55
-#define __NR_mpx                 56
+                                 /* 56 was sys_mpx */
 #define __NR_setpgid             57
-#define __NR_ulimit              58
-#define __NR_oldolduname         59
+                                 /* 58 was sys_ulimit */
+                                 /* 59 was sys_olduname */
 #define __NR_umask               60
 #define __NR_chroot              61
 #define __NR_ustat               62
@@ -91,7 +91,7 @@
 #define __NR_settimeofday        79
 #define __NR_getgroups           80
 #define __NR_setgroups           81
-#define __NR_select              82
+                                 /* 82 was sys_oldselect */
 #define __NR_symlink             83
 #define __NR_oldlstat            84
 #define __NR_readlink            85
@@ -107,10 +107,10 @@
 #define __NR_fchown              95
 #define __NR_getpriority         96
 #define __NR_setpriority         97
-#define __NR_profil              98
+                                 /* 98 was sys_profil */
 #define __NR_statfs              99
 #define __NR_fstatfs            100
-#define __NR_ioperm             101
+                                /* 101 was sys_ioperm */
 #define __NR_socketcall         102
 #define __NR_syslog             103
 #define __NR_setitimer          104
@@ -119,10 +119,10 @@
 #define __NR_lstat              107
 #define __NR_fstat              108
 #define __NR_olduname           109
-#define __NR_iopl               110
+                                /* 110 was sys_iopl */
 #define __NR_vhangup            111
-#define __NR_idle               112
-#define __NR_vm86old            113
+                                /* 112 was sys_idle */
+                                /* 113 was sys_vm86old */
 #define __NR_wait4              114
 #define __NR_swapoff            115
 #define __NR_sysinfo            116
@@ -136,17 +136,17 @@
 #define __NR_adjtimex           124
 #define __NR_mprotect           125
 #define __NR_sigprocmask        126
-#define __NR_create_module      127
+                                /* 127 was sys_create_module */
 #define __NR_init_module        128
 #define __NR_delete_module      129
-#define __NR_get_kernel_syms    130
+                                /* 130 was sys_get_kernel_syms */
 #define __NR_quotactl           131
 #define __NR_getpgid            132
 #define __NR_fchdir             133
 #define __NR_bdflush            134
 #define __NR_sysfs              135
 #define __NR_personality        136
-#define __NR_afs_syscall        137 /* Syscall for Andrew File System */
+                                /* 137 was sys_afs_syscall */
 #define __NR_setfsuid           138
 #define __NR_setfsgid           139
 #define __NR__llseek            140
@@ -175,8 +175,8 @@
 #define __NR_mremap             163
 #define __NR_setresuid          164
 #define __NR_getresuid          165
-#define __NR_vm86               166
-#define __NR_query_module       167
+                                /* 166 was sys_vm86 */
+                                /* 167 was sys_query_module */
 #define __NR_poll               168
 #define __NR_nfsservctl         169
 #define __NR_setresgid          170
@@ -197,8 +197,8 @@
 #define __NR_capset             185
 #define __NR_sigaltstack        186
 #define __NR_sendfile           187
-#define __NR_streams1           188     /* some people actually want it */
-#define __NR_streams2           189     /* some people actually want it */
+                                /* 188 reserved for sys_getpmsg */
+                                /* 189 reserved for sys_putpmsg */
 #define __NR_vfork              190
 #define __NR_ugetrlimit         191     /* SuS compliant getrlimit */
 #define __NR_mmap2              192
@@ -231,7 +231,8 @@
 #define __NR_madvise            219
 #define __NR_getdents64         220
 #define __NR_fcntl64            221
-/* 223 is unused */
+                                /* 222 is reserved for tux */
+                                /* 223 is unused */
 #define __NR_gettid             224
 #define __NR_readahead          225
 #define __NR_setxattr           226
@@ -251,15 +252,15 @@