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authorThomas Schwinge <tschwinge@gnu.org>2012-05-13 06:06:11 +0200
committerThomas Schwinge <tschwinge@gnu.org>2012-05-13 06:06:11 +0200
commit6f9c0342f33f52a2bda98d3709fbefd678bd46d9 (patch)
treeb46200f4ffae908ea2d07224d0ac51132c66d48a /open_issues/glibc
parent35b719f54c96778f571984065579625bc9f15bf5 (diff)
IRC.
Diffstat (limited to 'open_issues/glibc')
-rw-r--r--open_issues/glibc/getlogin_r.mdwn45
-rw-r--r--open_issues/glibc/octave.mdwn35
2 files changed, 80 insertions, 0 deletions
diff --git a/open_issues/glibc/getlogin_r.mdwn b/open_issues/glibc/getlogin_r.mdwn
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+++ b/open_issues/glibc/getlogin_r.mdwn
@@ -0,0 +1,45 @@
+[[!meta copyright="Copyright © 2012 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!meta title="getlogin_r"]]
+
+[[!tag open_issue_glibc]]
+
+
+# IRC, freenode, #hurd, 2012-04-23
+
+ * pinotree spots how our getlogin_r() implementation uses a static
+ buffer...
+ <braunr> oO
+ <pinotree> braunr: yeah, the _r means "reentrantbutnotreally" xD
+ <braunr> pinotree: that's amazing ..
+ <antrik> pinotree: without having checked the actual implementation, that
+ doesn't sound like a problem...
+ <antrik> caching doesn't break reentrancy. the problem with the plain
+ getlogin() is that a static buffer is *returned to the user*
+ <pinotree> antrik: http://paste.debian.net/164727/
+ <braunr> ah, caching
+ <pinotree> i don't think this is caching at all
+ <antrik> pinotree: OK, not actually caching... but same effect as far as I
+ can tell
+ <antrik> pinotree: or is it the fixed size of the temporary variable you
+ are concerned about?
+ <pinotree> antrik: my concern was about the "static" of the buffer used for
+ the get_login rpc
+ <antrik> pinotree: I'm not sure that's a problem. can the login actually
+ ever change for a running process?
+ <pinotree> dunno
+ <pinotree> but if so, it would be pointless to do the rpc every time
+ instead of just once
+ <antrik> pinotree: true
+ * pinotree would just make it non-static and be safe
+ <antrik> pinotree: well, one might argue that allocating a KiB of stack
+ space is not very friendly, especially in a low-level library...
+ <antrik> not sure what the general policy is about such things in libc
diff --git a/open_issues/glibc/octave.mdwn b/open_issues/glibc/octave.mdwn
new file mode 100644
index 00000000..b12b7558
--- /dev/null
+++ b/open_issues/glibc/octave.mdwn
@@ -0,0 +1,35 @@
+[[!meta copyright="Copyright © 2012 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!tag open_issue_glibc]]
+
+
+# IRC, OFTC, #debian-hurd, 2012-04-23
+
+ <pinotree> diffing the octave i386 vs hurd-i386 build logs gives
+ interesting surprises
+ <youpi> checking whether this system has an arbitrary file name length
+ limit... no | checking whether this system has an arbitrary
+ file name length limit... yes
+ <youpi> ?
+ <pinotree> not only that
+ <youpi> checking whether getcwd handles long file names properly... yes
+ | checking whether getcwd handles long file names properly... no, but it
+ is partly worki+
+ <youpi> ?
+ <pinotree> -checking whether fdopendir works... yes
+ <pinotree> +checking whether fdopendir works... no
+ <pinotree> (- is i386, + is hurd-i386)
+ <pinotree> -checking whether getlogin_r works with small buffers... yes
+ <pinotree> +checking whether getlogin_r works with small buffers... no
+ <pinotree> -checking for working mkstemp... yes
+ <pinotree> +checking for working mkstemp... no
+ <pinotree> +checking for working nanosleep... no (mishandles large
+ arguments)