diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | PROJECTS | 24 | ||||
| -rw-r--r-- | include/sys/sysinfo.h | 4 | ||||
| -rw-r--r-- | manual/filesys.texi | 70 | ||||
| -rw-r--r-- | manual/resource.texi | 19 | ||||
| -rw-r--r-- | manual/sysinfo.texi | 21 | ||||
| -rw-r--r-- | manual/syslog.texi | 50 | ||||
| -rw-r--r-- | sysdeps/generic/getsysstats.c | 6 | ||||
| -rw-r--r-- | sysdeps/generic/sys/sysinfo.h | 8 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/getsysstats.c | 14 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sys/sysinfo.h | 8 |
11 files changed, 142 insertions, 89 deletions
@@ -1,5 +1,12 @@ 2001-02-11 Ulrich Drepper <drepper@redhat.com> + * sysdeps/generic/getsysstat.c: Change return value of get_phys_pages + and get_avphys_page to long int. + * sysdeps/unix/sysv/linux/getsysstat.c: Likewise. + * include/sys/sysinfo.h: Likewise. + * sysdeps/generic/sys/sysinfo.h: Likewise. + * sysdeps/unix/sysv/linux/sys/sysinfo.h: Likewise. + * sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Fail if we cannot return as many values as the user asked for. @@ -1,6 +1,6 @@ Open jobs for finishing GNU libc: --------------------------------- -Status: December 1998 +Status: February 2001 If you have time and talent to take over any of the jobs below please contact <bug-glibc@gnu.org>. @@ -77,6 +77,9 @@ contact <bug-glibc@gnu.org>. It is planned to do a complete rewrite. +*** We have no multibyte character support. But a rewrite is still + necessary. + [11] Write access function for netmasks, bootparams, and automount databases for nss_files and nss_db module. @@ -84,24 +87,20 @@ contact <bug-glibc@gnu.org>. hard and not all services must be supported at once. -[14] We need to write a library for on-the-fly transformation of streams - of text. In fact, this would be a recode-library (you know, GNU recode). - This is needed in several places in the GNU libc and I already have - rather concrete plans but so far no possibility to start this. - -*** The library is available, now it remains to be used in the streams. - - [15] Cleaning up the header files. Ideally, each header style should follow the "good examples". Each variable and function should have a short description of the function and its parameters. The prototypes should always contain variable names which can help to identify their meaning; better than - int foo __P ((int, int, int, int)); + int foo (int, int, int, int); Blargh! +*** The conformtest.pl tool helps cleaning the namespace. As far as + known the prototypes all contain parameter names. But maybe some + comments can be improved. + [16] The libio stream file functions should be extended in a way to use mmap to map the file and use it as the buffer to user sees. For @@ -194,7 +193,4 @@ contact <bug-glibc@gnu.org>. user should be preferred even if the last user spent more time. -[26] Improve the AIO implementation so that threads do not immediately - terminate if no more requests are available. Let them sleep for a - while and wake them up on demand. If after a while no request arrived - they really can die. +[26] ...done diff --git a/include/sys/sysinfo.h b/include/sys/sysinfo.h index 69e9045..e126bcb 100644 --- a/include/sys/sysinfo.h +++ b/include/sys/sysinfo.h @@ -10,9 +10,9 @@ extern int __get_nprocs_conf (void); extern int __get_nprocs (void); /* Return number of physical pages of memory in the system. */ -extern int __get_phys_pages (void); +extern long int __get_phys_pages (void); /* Return number of available physical pages of memory in the system. */ -extern int __get_avphys_pages (void); +extern long int __get_avphys_pages (void); #endif /* sys/sysinfo.h */ diff --git a/manual/filesys.texi b/manual/filesys.texi index c550d72..84c9f6b 100644 --- a/manual/filesys.texi +++ b/manual/filesys.texi @@ -140,6 +140,34 @@ syntax errors (@pxref{File Name Errors}), plus @code{ENOTDIR} if the file @var{filename} is not a directory. @end deftypefun +@comment unistd.h +@comment XPG +@deftypefun int fchdir (int @var{filedes}) +This function is used to set the process's working directory to +directory associated with the file descriptor @var{filedes}. + +The normal, successful return value from @code{fchdir} is @code{0}. A +value of @code{-1} is returned to indicate an error. The following +@code{errno} error conditions are defined for this function: + +@table @code +@item EACCES +Read permission is denied for the directory named by @code{dirname}. + +@item EBADF +The @var{filedes} argument is not a valid file descriptor. + +@item ENOTDIR +The file descriptor @var{filedes} is not associated with a directory. + +@item EINTR +The function call was interrupt by a signal. + +@item EIO +An I/O error occurred. +@end table +@end deftypefun + @node Accessing Directories @section Accessing Directories @@ -206,7 +234,7 @@ type of the appropriate size This is the type of the file, possibly unknown. The following constants are defined for its value: -@table @code +@vtable @code @item DT_UNKNOWN The type is unknown. On some systems this is the only value returned. @@ -227,24 +255,34 @@ A character device. @item DT_BLK A block device. -@end table +@end vtable -This member is a BSD extension. On systems where it is used, it +This member is a BSD extension. The symbol @code{_DIRENT_HAVE_D_TYPE} +is defined if this member is available. On systems where it is used, it corresponds to the file type bits in the @code{st_mode} member of -@code{struct statbuf}. On other systems it will always be DT_UNKNOWN. -These two macros convert between @code{d_type} values and @code{st_mode} -values: +@code{struct statbuf}. If the value cannot be determine the member +value is DT_UNKNOWN. These two macros convert between @code{d_type} +values and @code{st_mode} values: +@comment dirent.h +@comment BSD @deftypefun int IFTODT (mode_t @var{mode}) This returns the @code{d_type} value corresponding to @var{mode}. @end deftypefun +@comment dirent.h +@comment BSD @deftypefun mode_t DTTOIF (int @var{dtype}) This returns the @code{st_mode} value corresponding to @var{dtype}. @end deftypefun @end table -This structure may contain additional members in the future. +This structure may contain additional members in the future. Their +availability is always announced in the compilation environment by a +macro names @code{_DIRENT_HAVE_D_xxx} where @code{xxx} is replaced by +the name of the new member. For instance, the member @code{d_reclen} +available on some systems is announced through the macro +@code{_DIRENT_HAVE_D_RECLEN}. When a file has multiple names, each name has its own directory entry. The only way you can tell that the directory entries belong to a @@ -304,6 +342,24 @@ and the @code{opendir} function in terms of the @code{open} function. file descriptors are closed on @code{exec} (@pxref{Executing a File}). @end deftypefun +In some situations it can be desirable to get hold of the file +descriptor which is created by the @code{opendir} call. For instance, +to switch the current working directory to the directory just read the +@code{fchdir} function could be used. Historically the @code{DIR} type +was exposed and programs could access the fields. This does not happen +in the GNU C library. Instead a separate function is provided to allow +access. + +@comment dirent.h +@comment GNU +@deftypefun int dirfd (DIR *@var{dirstream}) +The function @code{dirfd} returns the file descriptor associated with +the directory stream @var{dirstream}. This descriptor can be used until +the directory is closed with @code{closedir}. If the directory stream +implementation is not using file descriptors the return value is +@code{-1}. +@end deftypefun + @node Reading/Closing Directory @subsection Reading and Closing a Directory Stream diff --git a/manual/resource.texi b/manual/resource.texi index 48e0ac0..9fc8b64 100644 --- a/manual/resource.texi +++ b/manual/resource.texi @@ -1401,3 +1401,22 @@ processors and so the call @noindent returns the number of processors which are currently inline (i.e., available). + +@cindex load average +Before starting more threads it should be checked whether the processors +are not already overused. Unix systems calculate something called the +@dfn{load average}. This is a number indicating how many processes were +running. This number is average over different periods of times +(normally 1, 5, and 15 minutes). + +@comment stdlib.h +@comment BSD +@deftypefun int getloadavg (double @var{loadavg}[], int @var{nelem}) +This function gets the 1, 5 and 15 minute load averages of the +system. The values are placed in @var{loadavg}. @code{getloadavg} will +place at most @var{nelem} elements into the array but never more than +three elements. The return value is the number of elements written to +@var{loadavg}, or -1 on error. + +This function is declared in @file{stdlib.h}. +@end deftypefun diff --git a/manual/sysinfo.texi b/manual/sysinfo.texi index 346a28c..7f82bb8 100644 --- a/manual/sysinfo.texi +++ b/manual/sysinfo.texi @@ -15,7 +15,6 @@ can make changes. machine type * Filesystem Handling:: Controlling/querying mounts * System Parameters:: Getting and setting various system parameters -* Load Average:: Getting the system load average @end menu To get information on parameters of the system that are built into the @@ -1193,23 +1192,3 @@ parameters are: @item @code{bdflush} @end itemize - -@node Load Average -@section Getting the system load average - -This section describes the @code{getloadavg} function, which gets the 1, 5 -and 15 minute load averages of the system. The load average is the number of -processes in the system run queue, averaged over various periods of time -(1, 5 and 15 minutes in this case). - -The symbols used in this section are declared in the file @file{stdlib.h}. - -@comment stdlib.h -@comment BSD -@deftypefun int getloadavg (double @var{loadavg}[], int @var{nelem}) -This function gets the 1, 5 and 15 minute load averages of the system. The -values are placed in @var{loadavg}. The function will place at most -@var{nelem} elements into the array, @var{loadavg}. Never are there more -than three elements returned and possibly less than @var{nelem}. The return -value is the number of elements written to @var{loadavg}, or -1 on error. -@end deftypefun diff --git a/manual/syslog.texi b/manual/syslog.texi index 4c190d3..49f599d 100644 --- a/manual/syslog.texi +++ b/manual/syslog.texi @@ -59,7 +59,7 @@ Pass to another daemon Discard @end itemize -Syslogd can also handle messages from other systems. It listens on the +Syslogd can also handle messages from other systems. It listens on the @code{syslog} UDP port as well as the local socket for messages. Syslog can handle messages from the kernel itself. But the kernel @@ -158,7 +158,7 @@ to identify the source of the message, and people conventionally set it to the name of the program that will submit the messages. @code{openlog} may or may not open the @file{/dev/log} socket, depending -on @var{option}. If it does, it tries to open it and connect it as a +on @var{option}. If it does, it tries to open it and connect it as a stream socket. If that doesn't work, it tries to open it and connect it as a datagram socket. The socket has the ``Close on Exec'' attribute, so the kernel will close it if the process performs an exec. @@ -166,7 +166,7 @@ so the kernel will close it if the process performs an exec. You don't have to use @code{openlog}. If you call @code{syslog} without having called @code{openlog}, @code{syslog} just opens the connection implicitly and uses defaults for the information in @var{ident} and -@var{options}. +@var{options}. @var{options} is a bit string, with the bits as defined by the following single bit masks: @@ -243,7 +243,7 @@ writing to the Unix domain socket @code{/dev/log}. @code{syslog} submits the message with the facility and priority indicated by @var{facility_priority}. The macro @code{LOG_MAKEPRI} generates a -facility/priority from a facility and a priority, as in the following +facility/priority from a facility and a priority, as in the following example: @smallexample @@ -255,7 +255,7 @@ The possible values for the facility code are (macros): @c Internally, there is also LOG_KERN, but LOG_KERN == 0, which means @c if you try to use it here, just selects default. -@table @code +@vtable @code @item LOG_USER A miscellaneous user process @item LOG_MAIL @@ -294,15 +294,15 @@ Locally defined Locally defined @item LOG_LOCAL7 Locally defined -@end table +@end vtable Results are undefined if the facility code is anything else. -@strong{note:} Syslog recognizes one other facility code: that of the -kernel. But you can't specify that facility code with these functions. -If you try, it looks the same to @code{syslog} as if you are requesting -the default facility. But you wouldn't want to anyway, because any -program that uses the GNU C library is not the kernel. +@strong{note:} @code{syslog} recognizes one other facility code: that of +the kernel. But you can't specify that facility code with these +functions. If you try, it looks the same to @code{syslog} as if you are +requesting the default facility. But you wouldn't want to anyway, +because any program that uses the GNU C library is not the kernel. You can use just a priority code as @var{facility_priority}. In that case, @code{syslog} assumes the default facility established when the @@ -310,7 +310,7 @@ Syslog connection was opened. @xref{Syslog Example}. The possible values for the priority code are (macros): -@table @code +@vtable @code @item LOG_EMERG The message says the system is unusable. @item LOG_ALERT @@ -327,7 +327,7 @@ The message describes a normal but important event. The message is purely informational. @item LOG_DEBUG The message is only for debugging purposes. -@end table +@end vtable Results are undefined if the priority code is anything else. @@ -354,8 +354,8 @@ Example: @smallexample #include <syslog.h> -syslog(LOG_MAKEPRI(LOG_LOCAL1, LOG_ERROR), - "Unable to make network connection to %s. Error=%m", host); +syslog (LOG_MAKEPRI(LOG_LOCAL1, LOG_ERROR), + "Unable to make network connection to %s. Error=%m", host); @end smallexample @@ -364,8 +364,7 @@ syslog(LOG_MAKEPRI(LOG_LOCAL1, LOG_ERROR), @comment syslog.h @comment BSD -@deftypefun void vsyslog (int @var{facility_priority}, char *@var{format}, - __gnuc_va_list arglist) +@deftypefun void vsyslog (int @var{facility_priority}, char *@var{format}, va_list arglist) This is functionally identical to @code{syslog}, with the BSD style variable length argument. @@ -381,7 +380,7 @@ The symbols referred to in this section are declared in the file @comment syslog.h @comment BSD -@deftypefun void closelog () +@deftypefun void closelog (void) @code{closelog} closes the current Syslog connection, if there is one. This include closing the @file{dev/log} socket, if it is open. @@ -444,7 +443,7 @@ on for a certain priority and all priorities above it: LOG_UPTO(LOG_ERROR) @end smallexample -The unfortunate naming of the macro is due to the fact that internally, +The unfortunate naming of the macro is due to the fact that internally, higher numbers are used for lower message priorities. @end deftypefun @@ -462,16 +461,13 @@ in the example does nothing. @smallexample #include <syslog.h> -setlogmask(LOG_UPTO(LOG_NOTICE)); +setlogmask (LOG_UPTO (LOG_NOTICE)); -openlog("exampleprog", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1); +openlog ("exampleprog", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1); -syslog(LOG_NOTICE, "Program started by User %d", getuid()); -syslog(LOG_INFO, "A tree falls in a forest"); +syslog (LOG_NOTICE, "Program started by User %d", getuid ()); +syslog (LOG_INFO, "A tree falls in a forest"); -closelog(); +closelog (); @end smallexample - - - diff --git a/sysdeps/generic/getsysstats.c b/sysdeps/generic/getsysstats.c index d43a86a..bc517b7 100644 --- a/sysdeps/generic/getsysstats.c +++ b/sysdeps/generic/getsysstats.c @@ -1,5 +1,5 @@ /* getsysstats - Determine various system internal values, stub version. - Copyright (C) 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -44,7 +44,7 @@ weak_alias (__get_nprocs, get_nprocs) link_warning (get_nprocs, "warning: get_nprocs will always return 1") -int +long int __get_phys_pages () { /* We have no general way to determine this value. */ @@ -56,7 +56,7 @@ weak_alias (__get_phys_pages, get_phys_pages) stub_warning (get_phys_pages) -int +long int __get_avphys_pages () { /* We have no general way to determine this value. */ diff --git a/sysdeps/generic/sys/sysinfo.h b/sysdeps/generic/sys/sysinfo.h index e4ef69b..01c5474 100644 --- a/sysdeps/generic/sys/sysinfo.h +++ b/sysdeps/generic/sys/sysinfo.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,8 +17,8 @@ Boston, MA 02111-1307, USA. */ #ifndef _SYS_SYSINFO_H - #define _SYS_SYSINFO_H 1 + #include <features.h> /* Return number of configured processors. */ @@ -29,9 +29,9 @@ extern int get_nprocs (void) __THROW; /* Return number of physical pages of memory in the system. */ -extern int get_phys_pages (void) __THROW; +extern long int get_phys_pages (void) __THROW; /* Return number of available physical pages of memory in the system. */ -extern int get_avphys_pages (void) __THROW; +extern long int get_avphys_pages (void) __THROW; #endif /* sys/sysinfo.h */ diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c index 9a2d7cf..d8808ff 100644 --- a/sysdeps/unix/sysv/linux/getsysstats.c +++ b/sysdeps/unix/sysv/linux/getsysstats.c @@ -1,5 +1,5 @@ /* Determine various system internal values, Linux version. - Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -203,14 +203,14 @@ weak_alias (__get_nprocs_conf, get_nprocs_conf) /* General function to get information about memory status from proc filesystem. */ -static int +static long int internal_function phys_pages_info (const char *format) { FILE *fp; char buffer[8192]; const char *proc_path; - int result = -1; + long int result = -1; /* Get mount point of proc filesystem. */ proc_path = get_proc_path (buffer, sizeof buffer); @@ -258,12 +258,12 @@ phys_pages_info (const char *format) But not all systems have support for the /proc filesystem. If it is not available we return -1 as an error signal. */ -int +long int __get_phys_pages () { /* XXX Here will come a test for the new system call. */ - return phys_pages_info ("MemTotal: %d kB"); + return phys_pages_info ("MemTotal: %ld kB"); } weak_alias (__get_phys_pages, get_phys_pages) @@ -279,12 +279,12 @@ weak_alias (__get_phys_pages, get_phys_pages) But not all systems have support for the /proc filesystem. If it is not available we return -1 as an error signal. */ -int +long int __get_avphys_pages () { /* XXX Here will come a test for the new system call. */ - return phys_pages_info ("MemFree: %d kB"); + return phys_pages_info ("MemFree: %ld kB"); } weak_alias (__get_avphys_pages, get_avphys_pages) diff --git a/sysdeps/unix/sysv/linux/sys/sysinfo.h b/sysdeps/unix/sysv/linux/sys/sysinfo.h index 2f2b4df..c786f7c 100644 --- a/sysdeps/unix/sysv/linux/sys/sysinfo.h +++ b/sysdeps/unix/sysv/linux/sys/sysinfo.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1999, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,8 +17,8 @@ Boston, MA 02111-1307, USA. */ #ifndef _SYS_SYSINFO_H - #define _SYS_SYSINFO_H 1 + #include <features.h> /* Get sysinfo structure from kernel header. */ @@ -38,10 +38,10 @@ extern int get_nprocs (void) __THROW; /* Return number of physical pages of memory in the system. */ -extern int get_phys_pages (void) __THROW; +extern long int get_phys_pages (void) __THROW; /* Return number of available physical pages of memory in the system. */ -extern int get_avphys_pages (void) __THROW; +extern long int get_avphys_pages (void) __THROW; __END_DECLS |