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Message-ID: <20170618120006.GH27071@port70.net>
Date: Sun, 18 Jun 2017 14:00:07 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: syscall table discrepancies
* Szabolcs Nagy <nsz@...t70.net> [2017-02-18 03:41:29 +0100]:
> * Rich Felker <dalias@...c.org> [2017-02-16 21:00:44 -0500]:
> > On Thu, Feb 16, 2017 at 08:51:47PM -0500, Rich Felker wrote:
> > > arm
> > > +o__NR_arm_fadvise64_64 270
> > > +o__NR_arm_sync_file_range 341
> > > -o__NR_fadvise64_64 270
> >
> > Also a naming matter and one I'd probably rather not change, though
> > I'm not sure. It looks like powerpc has the same nonstandard arg order
> > for fadvise but doesn't use a different name, so it's not really
> > helpful for arm to use a different name here.
> >
> > Not sure about sync_file_range; it might suggest we have a bug.
>
> it's just an alias, i added the arm names, kept the normal name
>
> > > i386
> > > -o__NR_madvise1 219
> >
> > I think this is cruft that was removed...?
>
> linux removed it, i removed it too
>
> > > or1k
> > > -o__NR__llseek 62
> > > +o__NR_llseek 62
> >
> > This looks like a bug that probably has lseek broken on or1k with
> > files larger than 2GB... I think the #else case in lseek.c should
>
> it's a naming issue, i added the new name, but kept the old one
> for now.
>
> __NR_lseek would be a bug
> __NR__llseek is the old name of the syscall.
> __NR_llseek is how new 32bit arches call it.
>
> > probably be tweaked to produce a compile-time error if syscall_arg_t
> > is 32-bit. That would also catch musl's equivalent of this n32 bug
> > which remains unfixed:
> >
> > https://sourceware.org/ml/libc-alpha/2017-01/msg00074.html
> >
> > > powerpc
> > > -o__NR_getresgid32 170
> > > -o__NR_getresuid32 165
> > > -o__NR_setresgid32 169
> > > -o__NR_setresuid32 164
> >
> > These can probably be safely removed; I suspect they were cruft from
> > before the general renaming in src/internal/syscall.h was in place.
> >
> > > -o__NR_timerfd 306
> >
> > Also a leftover/legacy name, I presume?
>
> i dropped these.
> >From 8057a8d5f5e6e53a81b9e485ed36b746f43efd69 Mon Sep 17 00:00:00 2001
> From: Szabolcs Nagy <nsz@...t70.net>
> Date: Sat, 18 Feb 2017 00:50:09 +0000
> Subject: [PATCH] make syscall.h consistent with linux
>
> most of the found naming differences don't matter to musl, because
> internally it unifies the syscall names that vary across targets,
> but for external code the names should match the kernel uapi.
>
> aarch64:
> __NR_fstatat is called __NR_newfstatat in linux.
> __NR_or1k_atomic got mistakenly copied from or1k.
> arm:
> __NR_arm_sync_file_range is an alias for __NR_sync_file_range2
> __NR_fadvise64_64 is called __NR_arm_fadvise64_64 in linux,
> the old non-arm name is kept too, it should not cause issues.
> (powerpc has similar nonstandard fadvise and it uses the
> normal name.)
> i386:
> __NR_madvise1 was removed from linux in commit
> 303395ac3bf3e2cb488435537d416bc840438fcb 2011-11-11
> microblaze:
> __NR_fadvise, __NR_fstatat, __NR_pread, __NR_pwrite
> had different name in linux.
> mips:
> __NR_fadvise, __NR_fstatat, __NR_pread, __NR_pwrite, __NR_select
> had different name in linux.
> mipsn32:
> __NR_fstatat is called __NR_newfstatat in linux.
> or1k:
> __NR__llseek is called __NR_llseek in linux.
> the old name is kept too because that's the name musl uses
> internally.
> powerpc:
> __NR_{get,set}res{gid,uid}32 was never present in powerpc linux.
> __NR_timerfd was briefly defined in linux but then got renamed.
> ---
ping.
> arch/aarch64/bits/syscall.h.in | 3 +--
> arch/arm/bits/syscall.h.in | 2 ++
> arch/i386/bits/syscall.h.in | 1 -
> arch/microblaze/bits/syscall.h.in | 8 ++++----
> arch/mips/bits/syscall.h.in | 10 +++++-----
> arch/mipsn32/bits/syscall.h.in | 2 +-
> arch/or1k/bits/syscall.h.in | 1 +
> arch/powerpc/bits/syscall.h.in | 5 -----
> 8 files changed, 14 insertions(+), 18 deletions(-)
>
> diff --git a/arch/aarch64/bits/syscall.h.in b/arch/aarch64/bits/syscall.h.in
> index fd388eec..8b56afff 100644
> --- a/arch/aarch64/bits/syscall.h.in
> +++ b/arch/aarch64/bits/syscall.h.in
> @@ -77,7 +77,7 @@
> #define __NR_splice 76
> #define __NR_tee 77
> #define __NR_readlinkat 78
> -#define __NR_fstatat 79
> +#define __NR_newfstatat 79
> #define __NR_fstat 80
> #define __NR_sync 81
> #define __NR_fsync 82
> @@ -242,7 +242,6 @@
> #define __NR_perf_event_open 241
> #define __NR_accept4 242
> #define __NR_recvmmsg 243
> -#define __NR_or1k_atomic 244
> #define __NR_wait4 260
> #define __NR_prlimit64 261
> #define __NR_fanotify_init 262
> diff --git a/arch/arm/bits/syscall.h.in b/arch/arm/bits/syscall.h.in
> index 9b129b23..0096fe7c 100644
> --- a/arch/arm/bits/syscall.h.in
> +++ b/arch/arm/bits/syscall.h.in
> @@ -224,6 +224,7 @@
> #define __NR_tgkill 268
> #define __NR_utimes 269
> #define __NR_fadvise64_64 270
> +#define __NR_arm_fadvise64_64 270
> #define __NR_pciconfig_iobase 271
> #define __NR_pciconfig_read 272
> #define __NR_pciconfig_write 273
> @@ -295,6 +296,7 @@
> #define __NR_get_robust_list 339
> #define __NR_splice 340
> #define __NR_sync_file_range2 341
> +#define __NR_arm_sync_file_range 341
> #define __NR_tee 342
> #define __NR_vmsplice 343
> #define __NR_move_pages 344
> diff --git a/arch/i386/bits/syscall.h.in b/arch/i386/bits/syscall.h.in
> index 3a1d9270..1217f89a 100644
> --- a/arch/i386/bits/syscall.h.in
> +++ b/arch/i386/bits/syscall.h.in
> @@ -218,7 +218,6 @@
> #define __NR_pivot_root 217
> #define __NR_mincore 218
> #define __NR_madvise 219
> -#define __NR_madvise1 219
> #define __NR_getdents64 220
> #define __NR_fcntl64 221
> /* 223 is unused */
> diff --git a/arch/microblaze/bits/syscall.h.in b/arch/microblaze/bits/syscall.h.in
> index 109fcdeb..e5f928e3 100644
> --- a/arch/microblaze/bits/syscall.h.in
> +++ b/arch/microblaze/bits/syscall.h.in
> @@ -178,8 +178,8 @@
> #define __NR_rt_sigtimedwait 177
> #define __NR_rt_sigqueueinfo 178
> #define __NR_rt_sigsuspend 179
> -#define __NR_pread 180
> -#define __NR_pwrite 181
> +#define __NR_pread64 180
> +#define __NR_pwrite64 181
> #define __NR_chown 182
> #define __NR_getcwd 183
> #define __NR_capget 184
> @@ -246,7 +246,7 @@
> #define __NR_io_getevents 247
> #define __NR_io_submit 248
> #define __NR_io_cancel 249
> -#define __NR_fadvise 250
> +#define __NR_fadvise64 250
> #define __NR_exit_group 252
> #define __NR_lookup_dcookie 253
> #define __NR_epoll_create 254
> @@ -294,7 +294,7 @@
> #define __NR_mknodat 297
> #define __NR_fchownat 298
> #define __NR_futimesat 299
> -#define __NR_fstatat 300
> +#define __NR_fstatat64 300
> #define __NR_unlinkat 301
> #define __NR_renameat 302
> #define __NR_linkat 303
> diff --git a/arch/mips/bits/syscall.h.in b/arch/mips/bits/syscall.h.in
> index 6c9b3d8c..1a2147a7 100644
> --- a/arch/mips/bits/syscall.h.in
> +++ b/arch/mips/bits/syscall.h.in
> @@ -140,7 +140,7 @@
> #define __NR_setfsgid 4139
> #define __NR__llseek 4140
> #define __NR_getdents 4141
> -#define __NR_select 4142
> +#define __NR__newselect 4142
> #define __NR_flock 4143
> #define __NR_msync 4144
> #define __NR_readv 4145
> @@ -198,8 +198,8 @@
> #define __NR_rt_sigtimedwait 4197
> #define __NR_rt_sigqueueinfo 4198
> #define __NR_rt_sigsuspend 4199
> -#define __NR_pread 4200
> -#define __NR_pwrite 4201
> +#define __NR_pread64 4200
> +#define __NR_pwrite64 4201
> #define __NR_chown 4202
> #define __NR_getcwd 4203
> #define __NR_capget 4204
> @@ -252,7 +252,7 @@
> #define __NR_remap_file_pages 4251
> #define __NR_set_tid_address 4252
> #define __NR_restart_syscall 4253
> -#define __NR_fadvise 4254
> +#define __NR_fadvise64 4254
> #define __NR_statfs64 4255
> #define __NR_fstatfs64 4256
> #define __NR_timer_create 4257
> @@ -290,7 +290,7 @@
> #define __NR_mknodat 4290
> #define __NR_fchownat 4291
> #define __NR_futimesat 4292
> -#define __NR_fstatat 4293
> +#define __NR_fstatat64 4293
> #define __NR_unlinkat 4294
> #define __NR_renameat 4295
> #define __NR_linkat 4296
> diff --git a/arch/mipsn32/bits/syscall.h.in b/arch/mipsn32/bits/syscall.h.in
> index d6b24e8f..cd843a76 100644
> --- a/arch/mipsn32/bits/syscall.h.in
> +++ b/arch/mipsn32/bits/syscall.h.in
> @@ -253,7 +253,7 @@
> #define __NR_mknodat 6253
> #define __NR_fchownat 6254
> #define __NR_futimesat 6255
> -#define __NR_fstatat 6256
> +#define __NR_newfstatat 6256
> #define __NR_unlinkat 6257
> #define __NR_renameat 6258
> #define __NR_linkat 6259
> diff --git a/arch/or1k/bits/syscall.h.in b/arch/or1k/bits/syscall.h.in
> index 89788a9d..54581fb4 100644
> --- a/arch/or1k/bits/syscall.h.in
> +++ b/arch/or1k/bits/syscall.h.in
> @@ -61,6 +61,7 @@
> #define __NR_quotactl 60
> #define __NR_getdents64 61
> #define __NR__llseek 62
> +#define __NR_llseek 62
> #define __NR_read 63
> #define __NR_write 64
> #define __NR_readv 65
> diff --git a/arch/powerpc/bits/syscall.h.in b/arch/powerpc/bits/syscall.h.in
> index 9d022321..35f7033e 100644
> --- a/arch/powerpc/bits/syscall.h.in
> +++ b/arch/powerpc/bits/syscall.h.in
> @@ -162,16 +162,12 @@
> #define __NR_sched_rr_get_interval 161
> #define __NR_nanosleep 162
> #define __NR_mremap 163
> -#define __NR_setresuid32 164
> #define __NR_setresuid 164
> -#define __NR_getresuid32 165
> #define __NR_getresuid 165
> #define __NR_query_module 166
> #define __NR_poll 167
> #define __NR_nfsservctl 168
> -#define __NR_setresgid32 169
> #define __NR_setresgid 169
> -#define __NR_getresgid32 170
> #define __NR_getresgid 170
> #define __NR_prctl 171
> #define __NR_rt_sigreturn 172
> @@ -306,7 +302,6 @@
> #define __NR_epoll_pwait 303
> #define __NR_utimensat 304
> #define __NR_signalfd 305
> -#define __NR_timerfd 306
> #define __NR_timerfd_create 306
> #define __NR_eventfd 307
> #define __NR_sync_file_range2 308
> --
> 2.11.0
>
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