From 5ae9d168f66cc6b40f74cfb4a8f2631fc1df6a2a Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 21 Mar 1997 20:00:48 +0000 Subject: Update. 1997-03-21 20:55 Ulrich Drepper * sysdeps/generic/machine-gmon.h: Update copyright. * sysdeps/i386/Makefile [$(subdir)=gmon] (sysdep_routines): Add i386-mcount. * sysdeps/i386/dl-machine.h [PROF] (_dl_runtime_resolve): Don't use regparam mechanism for call of `fixup' call. * sysdeps/i386/Dist: New file. * sysdeps/i386/i386-mcount.S: New file. `mcount' entry point. * sysdeps/i386/machine-gmon.h: New file. i386 specific version of gmon definitions. 1997-03-20 13:39 Andreas Jaeger * stdlib/tst-strtol.c (main): Save the value of errno since printf may modify it, use the saved errno everywhere. * stdlib/tst-strtod.c (main): Likewise. 1997-03-21 05:54 Ulrich Drepper * posix/glob.c (glob): Fix completely broken handling of GLOB_BRACE and partly broken handling of GLOB_TILDE. Reported by Dennis Henriksen . 1997-03-20 20:22 Ulrich Drepper * sysdeps/unix/sysv/linux/readv.c: Don't emulate readv with small UIO_FASTIOV value by multiple readv calls since we need atomicity. * sysdeps/unix/sysv/linux/writev.c: Likewise. Reported by Matthis Urlichs. 1997-03-20 04:34 Roland McGrath * sysdeps/unix/sysv/linux/i386/sysdep.S (CALL_MCOUNT): Clear this macro so ENTRY(__syscall_error) doesn't insert a call to _mcount, which clobbers %eax. * Makeconfig [$(elf)=yes] (+prector, +postctor): New variables for crtbegin.o/crtend.o, using gcc to find them. (+link): Use them. 1997-03-20 00:06 Richard Henderson * gmon/sys/gmon.h: Revert the bulk of the 960930 changes, as they affect the alignment, and therefore the end padding of the structs. Reported by David Mosberger . * gmon.c: Declare the variables with aligned tags to compensate. Use __writev instead of write for the I/O. * misc/sys/uio.h: Declare __writev and __readv. * sysdeps/posix/readv.c: Rename and alias readv to __readv. * sysdeps/posix/writev.c: Likewise for writev. * sysdeps/stub/readv.c: Likewise. * sysdeps/stub/writev.c: Likewise. * sysdeps/unix/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/readv.c: Likewise. * sysdeps/unix/sysv/linux/writev.c: Likewise. * stdlib/testdiv.c: Exit with error status when we have an error. * sysdeps/alpha/div.S: Initialize `quotient' and `mask'. * sysdeps/alpha/ldiv.S: Likewise. * sysdeps/unix/sysv/linux/alpha/ioperm.c: Include ctype.h for isdigit. 1997-03-20 14:51 Ulrich Drepper * nis/nis_file.c: Unify error handling. 1997-03-19 18:36 Thorsten Kukuk * nis/nis_file.c (writeColdStartFile): Fix typo. * nis/nis_free.c (nis_free_endpoints): Use unsigned int. * nis/nis_free.c (nis_free_servers): Likewise. * nis/rpcsvc/nislib.h: Likewise. * sunrpc/rpc/netdb.h: Add setrpcent and endrpcent prototypes. --- sysdeps/unix/sysv/linux/readv.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) (limited to 'sysdeps/unix/sysv/linux/readv.c') diff --git a/sysdeps/unix/sysv/linux/readv.c b/sysdeps/unix/sysv/linux/readv.c index c8ff55ab45..2c215ce920 100644 --- a/sysdeps/unix/sysv/linux/readv.c +++ b/sysdeps/unix/sysv/linux/readv.c @@ -23,6 +23,8 @@ #include extern ssize_t __syscall_readv __P ((int, __const struct iovec *, int)); +static ssize_t __atomic_readv_replacement __P ((int, __const struct iovec *, + int)); /* Not all versions of the kernel support the large number of records. */ @@ -34,7 +36,7 @@ extern ssize_t __syscall_readv __P ((int, __const struct iovec *, int)); /* We should deal with kernel which have a smaller UIO_FASTIOV as well as a very big count. */ ssize_t -readv (fd, vector, count) +__readv (fd, vector, count) int fd; const struct iovec *vector; int count; @@ -44,25 +46,15 @@ readv (fd, vector, count) bytes_read = __syscall_readv (fd, vector, count); - if (bytes_read < 0 && errno == EINVAL && count > UIO_FASTIOV) - { - int i; + if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV) + return bytes_read; - /* Restore the old error value as if nothing happened. */ - __set_errno (errno_saved); + /* Restore the old error value as if nothing happened. */ + __set_errno (errno_saved); - bytes_read = 0; - for (i = 0; i < count; i += UIO_FASTIOV) - { - ssize_t bytes = __syscall_readv (fd, vector + i, - MIN (count - i, UIO_FASTIOV)); - - if (bytes < 0) - return bytes; - - bytes_read += bytes; - } - } - - return bytes_read; + return __atomic_readv_replacement (fd, vector, count); } +weak_alias (__readv, readv) + +#define __readv static __atomic_readv_replacement +#include -- cgit v1.2.3