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74 Commits

Author SHA1 Message Date
Michael Kerrisk b43a3b301e eventfd.2, execve.2, getdents.2, ioprio_set.2, mprotect.2, signalfd.2, timerfd_create.2, wait.2, backtrace.3, clock_getcpuclockid.3, end.3, fmemopen.3, fopencookie.3, frexp.3, getdate.3, getgrouplist.3, getprotoent_r.3, getservent_r.3, gnu_get_libc_version.3, inet.3, inet_pton.3, makecontext.3, malloc.3, matherr.3, offsetof.3, pthread_attr_init.3, pthread_create.3, pthread_getattr_np.3, sem_wait.3, strftime.3, strtok.3, strtol.3, core.5, proc.5, cpuset.7, mq_overview.7: Global fix: Format user input in shell sessions in boldface 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2008-10-29 14:54:23 -05:00
Michael Kerrisk acddbaea0c Removed trailing white space at end of lines 2008-10-07 10:58:44 +02:00
Michael Kerrisk 3a9dc9ff79 execve.2: _SC_ARG_MAX is no longer necessarily constant 
POSIX.1-2001 says that the values returned by sysconf()
are constant for the life of the process.
But the fact that, since Linux 2.6.23, ARG_MAX is settable
via RLIMIT_STACK means _SC_ARG_MAX is no longer constant,
since it can change at each execve().

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2008-10-05 05:59:32 +02:00
Michael Kerrisk f202015b45 execve.2: Linux now imposes a floor on the ARG_MAX limit 
Starting with Linux 2.6.23, the ARG_MAX limit became settable via
(1/4 of) RLIMIT_STACK.  This broke ABI compatibility if RLIMIT_STACK
was set such that ARG_MAX was < 32 pages.  Document the fact that
since 2.6.25 Linux imposes a floor on ARG_MAX, so that the old limit
of 32 pages is guaranteed.

For some background on the changes to ARG_MAX in kernels 2.6.23 and
2.6.25, see:
    http://sourceware.org/bugzilla/show_bug.cgi?id=5786
    http://bugzilla.kernel.org/show_bug.cgi?id=10095
    http://thread.gmane.org/gmane.linux.kernel/646709/focus=648101,
    checked into 2.6.25 as commit a64e715fc74b1a7dcc5944f848acc38b2c4d4ee2.

Also some reordering/rewording of the discussion of ARG_MAX.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2008-10-05 05:57:52 +02:00
Michael Kerrisk f3504b0292 srcfix 2008-10-05 03:29:35 +02:00
Michael Kerrisk bf50110267 execve.2: updated FIXME (for argv==NULL) in source comments 2008-10-03 06:04:03 +02:00
Michael Kerrisk 6c48afffcf wfix 2008-08-07 11:08:15 +00:00
Michael Kerrisk 2fb19a1619 The floating-point environment is reset to the default 
during an execve().
 2008-08-07 10:54:18 +00:00
Michael Kerrisk f0c34053bc Put SEE ALSO section into alphabetical order. 2008-07-14 15:52:21 +00:00
Michael Kerrisk 80d26cefad ffix 2008-06-26 13:28:19 +00:00
Michael Kerrisk 5b8dbfd4d0 ffixes 2008-06-26 13:23:48 +00:00
Michael Kerrisk a1d5601bee Removed trailing white space at end of lines 2008-06-12 11:52:08 +00:00
Michael Kerrisk 34dcae5481 Fix text that warns against use of NULL argv and envp. 
Using a NULL envp does in fact seem to be portable (works
on Solaris and FreeBSD), but the Linux semantics for a NULL
argv certainly aren't consistent with other implementations.
See http://bugzilla.kernel.org/show_bug.cgi?id=8408.
 2008-06-12 10:11:21 +00:00
Michael Kerrisk 24d01c530c s/filesystem/file system/ 2008-03-19 07:26:08 +00:00
Michael Kerrisk c15e4069f6 Added FIXME. 2008-02-22 15:38:58 +00:00
Michael Kerrisk e5a7fca5cc Clarify detail of RLIMIT_STACK/4 limit for argv+environ. 2008-02-22 15:18:34 +00:00
Michael Kerrisk e415892486 ffix 2007-12-25 21:41:35 +00:00
Michael Kerrisk d061dbacc3 spfix 2007-12-22 20:50:00 +00:00
Michael Kerrisk 4a8d10ef27 Minor rewordings 2007-12-22 17:00:19 +00:00
Michael Kerrisk 088a639be3 Make the standard indent for code samples, shell session 
logs, etc. to be ".in +4n".
 2007-12-19 06:57:44 +00:00
Michael Kerrisk 2777b1caec Remove section numbers for page references where the 
reference refers to the page itself.  (This stops man2html
producing links from a page back to itself.)
 2007-11-24 10:10:39 +00:00
Michael Kerrisk 3a16ac7aed ffix 2007-11-21 18:17:59 +00:00
Michael Kerrisk 71f66746c7 ffix 2007-11-18 07:31:02 +00:00
Michael Kerrisk 0daa9e92d0 Fix redundant formatting macros 2007-09-20 16:26:31 +00:00
Michael Kerrisk c11b1abf2e Change mtk's email address 2007-09-20 06:52:22 +00:00
Michael Kerrisk d739f5f8c7 Add text describing limit on total size of argv + evnp, 
and changes that occurred with 2.6.23.
Add getopt(3) to SEE ALSO list.
 2007-09-10 04:31:59 +00:00
Michael Kerrisk a8d5553785 ffix 2007-07-18 20:24:30 +00:00
Michael Kerrisk 5260fe08cf Use 'glibc' consistently to refer to GNU C library. 2007-07-09 22:01:31 +00:00
Michael Kerrisk 3f624b939f grfix 2007-07-08 12:51:09 +00:00
Michael Kerrisk 682edefb1b ffix 2007-06-22 17:16:20 +00:00
Michael Kerrisk 988db66164 strip trailing white space 2007-06-21 22:55:04 +00:00
Michael Kerrisk 8bd58774dc Formatted signal names 2007-06-21 05:38:48 +00:00
Michael Kerrisk 75b94dc35c Change "e.g. " to "e.g., ", or in some cases, "for example, ". 
Change "i.e. " to i.e.., ", or in some cases, "that is, ".
 2007-06-08 11:56:22 +00:00
Michael Kerrisk eb1af89677 Corrected minor spelling/wording mistakes (i.e., changes 
independent of fixes for American spelling).
 2007-06-08 10:58:53 +00:00
Michael Kerrisk d9bfdb9c21 Convert to American spelling conventions 2007-06-08 09:56:56 +00:00
Michael Kerrisk 53a1443cce Add SEE ALSO link to new credentials.7. 2007-06-08 07:57:18 +00:00
Michael Kerrisk 677f47663e Wrap source lines at sentence breaks. 2007-06-08 03:17:37 +00:00
Michael Kerrisk d9343c5c13 Removed version number from .TH line 2007-05-30 05:36:26 +00:00
Michael Kerrisk ad7cc990f2 Change reference to path_resolution.2 to path_resolutiion.7 2007-05-26 12:41:39 +00:00
Michael Kerrisk a7e1c01a76 ffix 2007-05-21 21:25:44 +00:00
Michael Kerrisk 8c87824d61 Made .SH into .SS 2007-05-16 02:45:55 +00:00
Michael Kerrisk a44012756e Minor repairs after global edits 2007-05-12 12:53:57 +00:00
Michael Kerrisk 60a90ecdae Convert function formatting of the form "\fBname\fP()" to ".BR name ()". 2007-05-12 09:06:04 +00:00
Michael Kerrisk 0bfa087b03 Add section numbers to references to other pages 2007-05-11 23:07:02 +00:00
Michael Kerrisk b364fca092 Removed some comment text about interpreter scripts, placing 
it instead in Changes file.
 2007-05-01 14:34:02 +00:00
Michael Kerrisk e506533603 hyphen --> minus 2007-05-01 07:58:48 +00:00
Michael Kerrisk d6f223a7e3 Mention effect of MS_NOSUID mount(2) flag for set-user-ID programs. 
Expanded description of handling of file descriptors during
execve(), adding text to note that descriptors 0, 1, and 2
may be treated specially.
 2007-04-30 14:30:17 +00:00
Michael Kerrisk e6b33ad7da Added an example program. 
Expanded the discussion of interpreter scripts and the
'optional-arg' argument of an interpreter script.
Added text noting that FD_CLOEXEC causes record locks to be released.
 2007-04-30 12:25:52 +00:00
Michael Kerrisk 3b5804b409 spfix 2007-04-30 10:58:27 +00:00
Michael Kerrisk 456960740c Add text noting that Linux allows 'argv' and 'envp' to be 
NULL, but warning that this is non-standard and non-portable,
and should be avoided in portable programs.
Bug filed (http://bugzilla.kernel.org/show_bug.cgi?id=8408)
to get this changed, but maybe that won't be done because it
is an ABI change.
 2007-04-30 10:39:32 +00:00