Re: Semantics of seteuid(uid) vs. setreuid(-1,uid)
On 2004-06-07 01:30 -0700, David Schultz [EMAIL PROTECTED] wrote: On Sun, Jun 06, 2004, Stefan Eer wrote: Any reason, that there is a difference in semantics between: seteuid(id) vs. setreuid(-1, id)??? The tests performed on the arguments are different (assuming a fixed arg of -1 for ruid) in that seteuid does not support the case of (euid == cr_uid): [...] Is the difference between seteuid() and setreuid() deliberate ? The best rationale I can think of is that setreuid(x, geteuid()) does something useful, whereas seteuid(geteuid()) is a no-op. I think the seteuid() behavior you complain about exists for purely historical reasons. POSIX does not require seteuid(geteuid()) to succeed, but it implicitly allows it as an extension. Solaris and Linux have this extension. The trouble with tweaking the interface is that you always have to ask: what new security holes could this open up in existing software? Thanks for the reply. I'm afraid that there might be security risks and/or broken programs in the system. Problem is, that the current behaviour breaks programs in ports, that expect seteuid to behave the same as setreuid(-1,uid) does on FreeBSD. But this can be fixed in the individual ports ... Hao Chen points out that the failure of seteuid(geteuid()) in FreeBSD is one of many tricky issues with using the set*uid() interface portably. In my (biased) opinion, his Setuid Demystified paper, is well worth reading if you want to untangle this stuff in your mind: http://www.usenix.org/events/sec02/full_papers/chen/chen.pdf Thank you for the pointer: Interesting reading ! Regards, STefan ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Dell SBLive! (almost) fixed
Hello hackers@, I just helped a friend install FreeBSD 5.2.1 on his Dell desktop machine, and we've been struggling to get his sound card working. His system has an SBLive! card, we were unable to use it with the stock snd_emu10k1 driver. However... pciconf -lv output: [EMAIL PROTECTED]:2:0: class=0x040100 card=0x10031102 chip=0x00061102 rev=0x00 hdr=0x00 vendor = 'Creative Labs' device = 'emu10k1x Soundblaster Live! 5.1' class= multimedia subclass = audio relevant lines from /usr/src/sys/dev/sound/pci/emu10k1.c: #define EMU10K1_PCI_ID 0x00021102 #define EMU10K2_PCI_ID 0x00041102 As you can see, Dell has apparently changed the card's PCI ID, and thus the driver is not detecting it. I modified emu10k1.c to include the PCI ID (see attached diff). Now, the new snd_emu10k1 driver detects the card: pcm0: Creative EMU10K1 (Dell) port 0xdf20-0xdf3f irq 17 at device 2.0 on pci2 pcm0: SigmaTel STAC9708/11 AC97 Codec This *appears* to be working, but when I tried to play an mp3 with mpg123, I got this error, and no sound: pcm0:play:0: play interrupt timeout, channel dead Could anyone with experience in this area venture a guess as to the problem? Thanks, Joseph ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Dell SBLive! (almost) fixed
Whoops, forgot the diff. It's attached. Joseph --- emu10k1.c 2004-06-09 11:26:37.0 -0500 +++ emu10k1.c.dell 2004-06-09 11:29:26.0 -0500 @@ -37,6 +37,7 @@ /* */ #defineEMU10K1_PCI_ID 0x00021102 +#defineEMU10K1_DELL_PCI_ID 0x00061102 #defineEMU10K2_PCI_ID 0x00041102 #defineEMU_DEFAULT_BUFSZ 4096 #defineEMU_CHANS 4 @@ -1441,6 +1442,10 @@ case EMU10K1_PCI_ID: s = Creative EMU10K1; break; + + case EMU10K1_DELL_PCI_ID: + s = Creative EMU10K1 (Dell); + break; /* case EMU10K2_PCI_ID: s = Creative EMU10K2; @@ -1595,6 +1600,10 @@ s = Creative EMU10K1 Joystick; device_quiet(dev); break; + case 0x70041102: + s = Creative EMU10K1 Joystick (Dell); + device_quiet(dev); + break; case 0x70031102: s = Creative EMU10K2 Joystick; device_quiet(dev); ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: bugs with disk space
* Jose Hidalgo Herrera [EMAIL PROTECTED] [20040609 19:35]: srv0:~# df -hi / FilesystemSize Used Avail Capacity iused ifree %iused Mounted on /dev/ad0s1a 126M 125M -8.9M 108%1364 148908% / srv0:~# du -shx / 36M/ The operating system complains about free space, but I'm only using 36M, while the df says that I'm using 125M, the inodes are not the problem. FAQ 9.23 qvb -- pica ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Dell SBLive! (almost) fixed
On Jun 09, Joseph Dunn wrote: Hello hackers@, I just helped a friend install FreeBSD 5.2.1 on his Dell desktop machine, and we've been struggling to get his sound card working. His system has an SBLive! card, we were unable to use it with the stock snd_emu10k1 driver. However... pciconf -lv output: [EMAIL PROTECTED]:2:0: class=0x040100 card=0x10031102 chip=0x00061102 rev=0x00 hdr=0x00 vendor = 'Creative Labs' device = 'emu10k1x Soundblaster Live! 5.1' class= multimedia subclass = audio relevant lines from /usr/src/sys/dev/sound/pci/emu10k1.c: #define EMU10K1_PCI_ID 0x00021102 #define EMU10K2_PCI_ID 0x00041102 As you can see, Dell has apparently changed the card's PCI ID, and thus the driver is not detecting it. I modified emu10k1.c to include the PCI ID (see attached diff). Now, the new snd_emu10k1 driver detects the card: pcm0: Creative EMU10K1 (Dell) port 0xdf20-0xdf3f irq 17 at device 2.0 on pci2 pcm0: SigmaTel STAC9708/11 AC97 Codec This *appears* to be working, but when I tried to play an mp3 with mpg123, I got this error, and no sound: pcm0:play:0: play interrupt timeout, channel dead Could anyone with experience in this area venture a guess as to the Hi Joseph, I seem to recall a couple of open PRs on this particular issue. I think it's more complicated than just setting the PCIID of the device, and I've never actually heard of anyone hacking the emu10k1 to support the DELL OEM version of the card. I would venture a guess and say if ALSA can do, then we have a fighting chance, though I haven't looked ALSA to see what they do in a long time... Please keep me up to date on your progress. Thanks, --Mat -- Canada is a country whose main exports are hockey players and cold fronts. Our main imports are baseball players and acid rain. - Pierre Elliott Trudeau ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Dell SBLive! (almost) fixed
Joseph Dunn wrote: Whoops, forgot the diff. It's attached. Joseph --- emu10k1.c 2004-06-09 11:26:37.0 -0500 +++ emu10k1.c.dell 2004-06-09 11:29:26.0 -0500 @@ -37,6 +37,7 @@ /* */ #define EMU10K1_PCI_ID 0x00021102 +#define EMU10K1_DELL_PCI_ID 0x00061102 #define EMU10K2_PCI_ID 0x00041102 #define EMU_DEFAULT_BUFSZ 4096 #define EMU_CHANS 4 @@ -1441,6 +1442,10 @@ case EMU10K1_PCI_ID: s = Creative EMU10K1; break; + + case EMU10K1_DELL_PCI_ID: + s = Creative EMU10K1 (Dell); + break; /* case EMU10K2_PCI_ID: s = Creative EMU10K2; @@ -1595,6 +1600,10 @@ s = Creative EMU10K1 Joystick; device_quiet(dev); break; + case 0x70041102: + s = Creative EMU10K1 Joystick (Dell); + device_quiet(dev); + break; case 0x70031102: s = Creative EMU10K2 Joystick; device_quiet(dev); ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED] Try the drivers from www.opensound.com and see if it can get it working. If they can, then probably the card is also modified too. -- Alin-Adrian Anton Reversed Hell Networks GPG keyID 0x1E2FFF2E (2963 0C11 1AF1 96F6 0030 6EE9 D323 639D 1E2F FF2E) gpg --keyserver pgp.mit.edu --recv-keys 1E2FFF2E ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
indent bugfix / added features
Hi all,
I've been working on a major project, and decided to use indent to
normalize the code a bit. In doing so I discovered a few deficencies in
the stock FreeBSD (5.2-CURRENT) indent and decided to fix them, I
thought these might be fairly common wishes (and one of them is a
bugfix) and have attached a patch which does the following:
* Adds an option to control tab use in output code (-ut and -nut)
(This is in the GNU indent)
* Adds an option to control brace placement after function declaration
(-fbs and -nfbs). What this does, specifically, is allow you to have
indent produce 'func(args..) {' instead of 'func(args..)\n{'. The old
behavior is the default.
* Fixes the indent bug when aligning variable names with an indentation
level that is not a multiple of 8. This works for both the 'tab use'
and 'no tab use' varieties of code output.
I don't know if anyone would be interested in committing the bugfix (I
believe it is correct) or added features, but I hope someone else finds
this useful.
-chip
--
personal: chip norkus; renaissance hacker;[EMAIL PROTECTED]
work: systems engineer @ lunarpages, inc.;[EMAIL PROTECTED]
info: finger [EMAIL PROTECTED] for plan or keys; http://telekinesis.org
diff -u /usr/src/usr.bin/indent/args.c ./args.c
--- /usr/src/usr.bin/indent/args.c Tue Mar 23 13:33:16 2004
+++ ./args.cThu Jun 10 19:01:10 2004
@@ -111,6 +111,7 @@
{eei, PRO_BOOL, false, ON, extra_expression_indent},
{ei, PRO_BOOL, true, ON, ps.else_if},
{fbc, PRO_FONT, 0, 0, (int *) blkcomf},
+{fbs, PRO_BOOL, true, ON, function_brace_split},
{fbx, PRO_FONT, 0, 0, (int *) boxcomf},
{fb, PRO_FONT, 0, 0, (int *) bodyf},
{fc1, PRO_BOOL, true, ON, format_col1_comments},
@@ -136,6 +137,7 @@
{ndj, PRO_BOOL, false, OFF, ps.ljust_decl},
{neei, PRO_BOOL, false, OFF, extra_expression_indent},
{nei, PRO_BOOL, true, OFF, ps.else_if},
+{nfbs, PRO_BOOL, true, OFF, function_brace_split},
{nfc1, PRO_BOOL, true, OFF, format_col1_comments},
{nfcb, PRO_BOOL, true, OFF, format_block_comments},
{nip, PRO_BOOL, true, OFF, ps.indent_parameters},
@@ -146,6 +148,7 @@
{nps, PRO_BOOL, false, OFF, pointer_as_binop},
{nsc, PRO_BOOL, true, OFF, star_comment_cont},
{nsob, PRO_BOOL, false, OFF, swallow_optional_blanklines},
+{nut, PRO_BOOL, true, OFF, use_tabs},
{nv, PRO_BOOL, false, OFF, verbose},
{pcs, PRO_BOOL, false, ON, proc_calls_space},
{psl, PRO_BOOL, true, ON, procnames_start_line},
@@ -154,6 +157,7 @@
{sob, PRO_BOOL, false, ON, swallow_optional_blanklines},
{st, PRO_SPECIAL, 0, STDIN, 0},
{troff, PRO_BOOL, false, ON, troff},
+{ut, PRO_BOOL, true, ON, use_tabs},
{v, PRO_BOOL, false, ON, verbose},
/* whew! */
{0, 0, 0, 0, 0}
diff -u /usr/src/usr.bin/indent/indent.c ./indent.c
--- /usr/src/usr.bin/indent/indent.cTue Feb 17 02:33:36 2004
+++ ./indent.c Thu Jun 10 21:45:58 2004
@@ -91,7 +91,7 @@
int squest;/* when this is positive, we have seen a ?
* without the matching : in a c?s:s
* construct */
-intuse_tabs; /* true if using tabs to indent to var name */
+intloc_use_tabs; /* true if using tabs to indent to var name */
const char *t_ptr; /* used for copying tokens */
int type_code; /* the type of token, returned by lexi */
@@ -765,8 +765,13 @@
}
else if (ps.in_parameter_declaration !ps.in_or_st) {
ps.i_l_follow = 0;
- dump_line();
- ps.want_blank = false;
+ if (function_brace_split) {
+ /* dump the line prior to the brace ... */
+ dump_line();
+ ps.want_blank = false;
+ } else
+ /* add a space between the decl and brace */
+ ps.want_blank = true;
}
}
if (ps.in_parameter_declaration)
@@ -914,11 +919,11 @@
if (ps.ind_level == 0 || ps.dec_nest 0) {
/* global variable or struct member in local variable */
dec_ind = ps.decl_indent 0 ? ps.decl_indent : i;
- use_tabs = ps.decl_indent 0;
+ loc_use_tabs = (use_tabs ? ps.decl_indent 0 : 0);
} else {
/* local variable */
dec_ind = ps.local_decl_indent 0 ? ps.local_decl_indent : i;
- use_tabs = ps.local_decl_indent 0;
+ loc_use_tabs = (use_tabs ? ps.local_decl_indent 0 : 0);
}
goto copy_id;
@@ -936,17 +941,31 @@
e_code += strlen(e_code);
} else {
int pos, startpos;
+ int loc_dec_ind;
+
