From c36213513490412941512daccf447513e442651b Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 17 Jun 2015 20:22:39 +0000 Subject: [PATCH] Fix nice getpriority, setpriority namespace (bug 18553). nice (XPG3) calls getpriority and setpriority (in XPG4 but not XPG3, i.e. UX-shaded in XPG4). This patch fixes this by making those functions into weak aliases of __* functions and calling the __* versions as needed. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). This completes cleaning up the unsorted linknamespace test XFAILs. [BZ #18553] * resource/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * resource/setpriority.c (setpriority): Rename to __setpriority and define as weak alias of __setpriority. * sysdeps/mach/hurd/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * sysdeps/mach/hurd/setpriority.c (setpriority): Rename to __setpriority and define as weak alias of __setpriority. * sysdeps/unix/syscalls.list (getpriority): Use __getpriority as strong name. (setpriority): Use __setpriority as strong name. * sysdeps/unix/sysv/linux/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * include/sys/resource.h (__getpriority): Declare. Use libc_hidden_proto. (__setpriority): Likewise. (getpriority): Don't use libc_hidden_proto. (setpriority): Likewise. * sysdeps/posix/nice.c (nice): Call __getpriority instead of getpriority. Call __setpriority instead of setpriority. * conform/Makefile (test-xfail-XPG3/unistd.h/linknamespace): Remove variable. --- ChangeLog | 24 ++++++++++++++++++++++++ NEWS | 3 ++- conform/Makefile | 3 --- include/sys/resource.h | 10 ++++++++-- resource/getpriority.c | 5 +++-- resource/setpriority.c | 5 +++-- sysdeps/mach/hurd/getpriority.c | 5 +++-- sysdeps/mach/hurd/setpriority.c | 5 +++-- sysdeps/posix/nice.c | 6 +++--- sysdeps/unix/syscalls.list | 4 ++-- sysdeps/unix/sysv/linux/getpriority.c | 5 +++-- 11 files changed, 54 insertions(+), 21 deletions(-) diff --git a/ChangeLog b/ChangeLog index 4ce8eb9..338bf8d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,29 @@ 2015-06-17 Joseph Myers + [BZ #18553] + * resource/getpriority.c (getpriority): Rename to __getpriority + and define as weak alias of __getpriority. + * resource/setpriority.c (setpriority): Rename to __setpriority + and define as weak alias of __setpriority. + * sysdeps/mach/hurd/getpriority.c (getpriority): Rename to + __getpriority and define as weak alias of __getpriority. + * sysdeps/mach/hurd/setpriority.c (setpriority): Rename to + __setpriority and define as weak alias of __setpriority. + * sysdeps/unix/syscalls.list (getpriority): Use __getpriority as + strong name. + (setpriority): Use __setpriority as strong name. + * sysdeps/unix/sysv/linux/getpriority.c (getpriority): Rename to + __getpriority and define as weak alias of __getpriority. + * include/sys/resource.h (__getpriority): Declare. Use + libc_hidden_proto. + (__setpriority): Likewise. + (getpriority): Don't use libc_hidden_proto. + (setpriority): Likewise. + * sysdeps/posix/nice.c (nice): Call __getpriority instead of + getpriority. Call __setpriority instead of setpriority. + * conform/Makefile (test-xfail-XPG3/unistd.h/linknamespace): + Remove variable. + [BZ #18547] * misc/getttyent.c (getttynam): Rename to __getttynam and define as weak alias of __getttynam. Use prototype function definition. diff --git a/NEWS b/NEWS index 3adec9b..1f6b701 100644 --- a/NEWS +++ b/NEWS @@ -22,7 +22,8 @@ Version 2.22 18324, 18333, 18346, 18397, 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18468, 18469, 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18507, 18512, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532, - 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547. + 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547, + 18553. * Cache information can be queried via sysconf() function on s390 e.g. with _SC_LEVEL1_ICACHE_SIZE as argument. diff --git a/conform/Makefile b/conform/Makefile index ad9cc69..4bc8121 100644 --- a/conform/Makefile +++ b/conform/Makefile @@ -342,6 +342,3 @@ test-xfail-XPG4/ndbm.h/linknamespace = yes test-xfail-UNIX98/ndbm.h/linknamespace = yes test-xfail-XOPEN2K/ndbm.h/linknamespace = yes test-xfail-XOPEN2K8/ndbm.h/linknamespace = yes - -# Unsorted expected failures. -test-xfail-XPG3/unistd.h/linknamespace = yes diff --git a/include/sys/resource.h b/include/sys/resource.h index 7622da9..688c46c 100644 --- a/include/sys/resource.h +++ b/include/sys/resource.h @@ -2,8 +2,14 @@ #include #ifndef _ISOMAC -libc_hidden_proto (getpriority) -libc_hidden_proto (setpriority) +/* Prototypes repeated instead of using __typeof because + sys/resource.h is included in C++ tests, and declaring functions + with __typeof and __THROW doesn't work for C++. */ +extern int __getpriority (__priority_which_t __which, id_t __who) __THROW; +libc_hidden_proto (__getpriority) +extern int __setpriority (__priority_which_t __which, id_t __who, int __prio) + __THROW; +libc_hidden_proto (__setpriority) libc_hidden_proto (getrlimit64) extern __typeof (getrlimit64) __getrlimit64; libc_hidden_proto (__getrlimit64); diff --git a/resource/getpriority.c b/resource/getpriority.c index 88ec4db..6df7294 100644 --- a/resource/getpriority.c +++ b/resource/getpriority.c @@ -23,13 +23,14 @@ or user (as specified by WHO) is used. A lower priority number means higher priority. Priorities range from PRIO_MIN to PRIO_MAX. */ int -getpriority (which, who) +__getpriority (which, who) enum __priority_which which; id_t who; { __set_errno (ENOSYS); return -1; } -libc_hidden_def (getpriority) +libc_hidden_def (__getpriority) +weak_alias (__getpriority, getpriority) stub_warning (getpriority) diff --git a/resource/setpriority.c b/resource/setpriority.c index 08b0a95..91521bd 100644 --- a/resource/setpriority.c +++ b/resource/setpriority.c @@ -21,7 +21,7 @@ /* Set the priority of all processes specified by WHICH and WHO to PRIO. Returns 0 on success, -1 on errors. */ int -setpriority (which, who, prio) +__setpriority (which, who, prio) enum __priority_which which; id_t who; int prio; @@ -29,6 +29,7 @@ setpriority (which, who, prio) __set_errno (ENOSYS); return -1; } -libc_hidden_def (setpriority) +libc_hidden_def (__setpriority) +weak_alias (__setpriority, setpriority) stub_warning (setpriority) diff --git a/sysdeps/mach/hurd/getpriority.c b/sysdeps/mach/hurd/getpriority.c index bb81ee6..73c7ad3 100644 --- a/sysdeps/mach/hurd/getpriority.c +++ b/sysdeps/mach/hurd/getpriority.c @@ -24,7 +24,7 @@ or user (as specified by WHO) is used. A lower priority number means higher priority. Priorities range from PRIO_MIN to PRIO_MAX. */ int -getpriority (enum __priority_which which, id_t who) +__getpriority (enum __priority_which which, id_t who) { error_t err, onerr; int maxpri = INT_MIN; @@ -81,4 +81,5 @@ getpriority (enum __priority_which which, id_t who) return MACH_PRIORITY_TO_NICE (maxpri); } -libc_hidden_def (getpriority) +libc_hidden_def (__getpriority) +weak_alias (__getpriority, getpriority) diff --git a/sysdeps/mach/hurd/setpriority.c b/sysdeps/mach/hurd/setpriority.c index 43b8877..41d7aa4 100644 --- a/sysdeps/mach/hurd/setpriority.c +++ b/sysdeps/mach/hurd/setpriority.c @@ -21,7 +21,7 @@ /* Set the priority of all processes specified by WHICH and WHO to PRIO. Returns 0 on success, -1 on errors. */ int -setpriority (enum __priority_which which, id_t who, int prio) +__setpriority (enum __priority_which which, id_t who, int prio) { error_t err; error_t pidloser, priloser; @@ -94,4 +94,5 @@ setpriority (enum __priority_which which, id_t who, int prio) return err ? __hurd_fail (err) : 0; } -libc_hidden_def (setpriority) +libc_hidden_def (__setpriority) +weak_alias (__setpriority, setpriority) diff --git a/sysdeps/posix/nice.c b/sysdeps/posix/nice.c index 67b1273..42bb99b 100644 --- a/sysdeps/posix/nice.c +++ b/sysdeps/posix/nice.c @@ -31,7 +31,7 @@ nice (int incr) /* -1 is a valid priority, so we use errno to check for an error. */ save = errno; __set_errno (0); - prio = getpriority (PRIO_PROCESS, 0); + prio = __getpriority (PRIO_PROCESS, 0); if (prio == -1) { if (errno != 0) @@ -40,12 +40,12 @@ nice (int incr) __set_errno (save); } - result = setpriority (PRIO_PROCESS, 0, prio + incr); + result = __setpriority (PRIO_PROCESS, 0, prio + incr); if (result == -1) { if (errno == EACCES) errno = EPERM; return -1; } - return getpriority (PRIO_PROCESS, 0); + return __getpriority (PRIO_PROCESS, 0); } diff --git a/sysdeps/unix/syscalls.list b/sysdeps/unix/syscalls.list index b3358bd..2254c76 100644 --- a/sysdeps/unix/syscalls.list +++ b/sysdeps/unix/syscalls.list @@ -29,7 +29,7 @@ gethostname - gethostname i:bn __gethostname gethostname getitimer - getitimer i:ip __getitimer getitimer getpeername - getpeername i:ibN __getpeername getpeername getpid - getpid Ei: __getpid getpid -getpriority - getpriority i:ii getpriority +getpriority - getpriority i:ii __getpriority getpriority getrlimit - getrlimit i:ip __getrlimit getrlimit getrusage - getrusage i:ip __getrusage getrusage getsockname - getsockname i:ibN __getsockname getsockname @@ -72,7 +72,7 @@ sethostid - sethostid i:i sethostid sethostname - sethostname i:pi sethostname setitimer - setitimer i:ipp __setitimer setitimer setpgid - setpgrp i:ii __setpgid setpgid -setpriority - setpriority i:iii setpriority +setpriority - setpriority i:iii __setpriority setpriority setregid - setregid i:ii __setregid setregid setreuid - setreuid i:ii __setreuid setreuid setrlimit - setrlimit i:ip __setrlimit setrlimit diff --git a/sysdeps/unix/sysv/linux/getpriority.c b/sysdeps/unix/sysv/linux/getpriority.c index 96d9de3..9c691bb 100644 --- a/sysdeps/unix/sysv/linux/getpriority.c +++ b/sysdeps/unix/sysv/linux/getpriority.c @@ -32,7 +32,7 @@ priority. Priorities range from PRIO_MIN to PRIO_MAX. */ int -getpriority (enum __priority_which which, id_t who) +__getpriority (enum __priority_which which, id_t who) { int res; @@ -41,4 +41,5 @@ getpriority (enum __priority_which which, id_t who) res = PZERO - res; return res; } -libc_hidden_def (getpriority) +libc_hidden_def (__getpriority) +weak_alias (__getpriority, getpriority) -- 2.7.4