From 9448b0513e2eec020fbca9c10412b83df5027a16 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 22 Jul 2013 11:22:36 -0400 Subject: refactor headers, especially alltypes.h, and improve C++ ABI compat the arch-specific bits/alltypes.h.sh has been replaced with a generic alltypes.h.in and minimal arch-specific bits/alltypes.h.in. this commit is intended to have no functional changes except: - exposing additional symbols that POSIX allows but does not require - changing the C++ name mangling for some types - fixing the signedness of blksize_t on powerpc (POSIX requires signed) - fixing the limit macros for sig_atomic_t on x86_64 - making dev_t an unsigned type (ABI matching goal, and more logical) in addition, some types that were wrongly defined with long on 32-bit archs were changed to int, and vice versa; this change is non-functional except for the possibility of making pointer types mismatch, and only affects programs that were using them incorrectly, and only at build-time, not runtime. the following changes were made in the interest of moving non-arch-specific types out of the alltypes system and into the headers they're associated with, and also will tend to improve application compatibility: - netdb.h now includes netinet/in.h (for socklen_t and uint32_t) - netinet/in.h now includes sys/socket.h and inttypes.h - sys/resource.h now includes sys/time.h (for struct timeval) - sys/wait.h now includes signal.h (for siginfo_t) - langinfo.h now includes nl_types.h (for nl_item) for the types in stdint.h: - types which are of no interest to other headers were moved out of the alltypes system. - fast types for 8- and 64-bit are hard-coded (at least for now); only the 16- and 32-bit ones have reason to vary by arch. and the following types have been changed for C++ ABI purposes; - mbstate_t now has a struct tag, __mbstate_t - FILE's struct tag has been changed to _IO_FILE - DIR's struct tag has been changed to __dirstream - locale_t's struct tag has been changed to __locale_struct - pthread_t is defined as unsigned long in C++ mode only - fpos_t now has a struct tag, _G_fpos64_t - fsid_t's struct tag has been changed to __fsid_t - idtype_t has been made an enum type (also required by POSIX) - nl_catd has been changed from long to void * - siginfo_t's struct tag has been removed - sigset_t's has been given a struct tag, __sigset_t - stack_t has been given a struct tag, sigaltstack - suseconds_t has been changed to long on 32-bit archs - [u]intptr_t have been changed from long to int rank on 32-bit archs - dev_t has been made unsigned summary of tests that have been performed against these changes: - nsz's libc-test (diff -u before and after) - C++ ABI check symbol dump (diff -u before, after, glibc) - grepped for __NEED, made sure types needed are still in alltypes - built gcc 3.4.6 --- include/signal.h | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) (limited to 'include/signal.h') diff --git a/include/signal.h b/include/signal.h index 242b4ad2..ee20372b 100644 --- a/include/signal.h +++ b/include/signal.h @@ -12,7 +12,6 @@ extern "C" { || defined(_BSD_SOURCE) #ifdef _GNU_SOURCE -#define __siginfo siginfo #define __ucontext ucontext #endif @@ -25,7 +24,6 @@ extern "C" { #define __NEED_time_t #define __NEED_clock_t #define __NEED_sigset_t -#define __NEED_siginfo_t #include @@ -77,19 +75,7 @@ extern "C" { #define CLD_STOPPED 5 #define CLD_CONTINUED 6 -struct sigaction { - union { - void (*sa_handler)(int); - void (*sa_sigaction)(int, siginfo_t *, void *); - } __sa_handler; - sigset_t sa_mask; - int sa_flags; - void (*sa_restorer)(void); -}; -#define sa_handler __sa_handler.sa_handler -#define sa_sigaction __sa_handler.sa_sigaction - -typedef struct { +typedef struct sigaltstack { void *ss_sp; int ss_flags; size_t ss_size; @@ -100,7 +86,7 @@ union sigval { void *sival_ptr; }; -struct __siginfo { +typedef struct { int si_signo, si_errno, si_code; union { char __pad[128 - 2*sizeof(int) - sizeof(long)]; @@ -126,7 +112,7 @@ struct __siginfo { int si_fd; } __sigpoll; } __si_fields; -}; +} siginfo_t; #define si_pid __si_fields.__sigchld.si_pid #define si_uid __si_fields.__sigchld.si_uid #define si_status __si_fields.__sigchld.si_status @@ -141,6 +127,18 @@ struct __siginfo { #define si_ptr __si_fields.__rt.si_sigval.sival_ptr #define si_int __si_fields.__rt.si_sigval.sival_int +struct sigaction { + union { + void (*sa_handler)(int); + void (*sa_sigaction)(int, siginfo_t *, void *); + } __sa_handler; + sigset_t sa_mask; + int sa_flags; + void (*sa_restorer)(void); +}; +#define sa_handler __sa_handler.sa_handler +#define sa_sigaction __sa_handler.sa_sigaction + struct sigevent { union sigval sigev_value; int sigev_signo; -- cgit v1.2.1