Linux-Development-Sys Digest #436, Volume #8 Mon, 22 Jan 01 12:13:18 EST
Contents:
2.2.18 broken cs46xx? (Jerry Quinn)
Re: double mmap calls ([EMAIL PROTECTED])
Re: I/O info by process (not partition or device)? ([EMAIL PROTECTED])
Re: How to write an application similar to "ps -aux" ("Alan Po")
----------------------------------------------------------------------------
From: Jerry Quinn <[EMAIL PROTECTED]>
Subject: 2.2.18 broken cs46xx?
Date: 22 Jan 2001 11:58:08 -0500
I have an IBM thinkpad T20, which has a cs4624 sound chip. I can't get the
sound to work on this machine. I've also tried 2.2.19pre7 with identical
results. The sound works fine under win2k on the same machine.
When I do modprobe cs46xx, I get the following
output, with similar output in the logs:
cs461x: AC'97 write problem, reg = 0x0, val = 0x0
cs461x: AC'97 read problem (ACCTL_DCV), reg = 0x0
as97_codec: Primary ac97 codec not present
cs461x: no devices found.
lspci -vv gives:
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort+ >SERR- <PERR-
Latency: 64
Region 0: Memory at f8000000 (32-bit, prefetchable)
Capabilities: [a0] AGP version 1.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
(prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV+ VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 128
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: f0000000-f7ffffff
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B+
00:02.0 CardBus bridge: Texas Instruments PCI1450 (rev 03)
Subsystem: IBM: Unknown device 0130
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64, cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: Memory at 50000000 (32-bit, non-prefetchable)
Bus: primary=00, secondary=02, subordinate=04, sec-latency=176
Memory window 0: 60000000-60021000 (prefetchable)
I/O window 0: 00000200-0000027f
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite+
16-bit legacy interface ports at 0001
00:02.1 CardBus bridge: Texas Instruments PCI1450 (rev 03)
Subsystem: IBM: Unknown device 0130
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64, cache line size 08
Interrupt: pin B routed to IRQ 11
Region 0: Memory at 50100000 (32-bit, non-prefetchable)
Bus: primary=00, secondary=05, subordinate=07, sec-latency=176
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
00:03.0 Communication controller: Lucent Microelectronics WinModem 56k (rev 01)
Subsystem: AMBIT Microsystem Corp.: Unknown device 0440
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 11
Region 0: Memory at e8101000 (32-bit, non-prefetchable)
Region 1: I/O ports at 1c00
Region 2: I/O ports at 1800
Capabilities: [f8] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear
SoundFusion Audio Accelerator] (rev 01)
Subsystem: IBM: Unknown device 0153
Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 11
Region 0: Memory at e8100000 (32-bit, non-prefetchable)
Region 1: Memory at e8000000 (32-bit, non-prefetchable)
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D3 PME-Enable- DSel=0 DScale=0 PME-
00:07.0 Bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) (prog-if 80
[Master])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64
Region 4: I/O ports at 1c10
00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00
[UHCI])
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at 1c20
00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 03)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/MX-/IX (rev 11) (prog-if
00 [VGA])
Subsystem: IBM: Unknown device 017f
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (1000ns min, 63750ns max), cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f0000000 (32-bit, non-prefetchable)
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [80] AGP version 1.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=31 SBA- AGP+ 64bit- FW- Rate=x2
02:00.0 Ethernet controller: 3Com Corporation 3CCFE575CT Cyclone CardBus (rev 10)
Subsystem: 3Com Corporation: Unknown device 5c57
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (2500ns min, 1250ns max), cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at 0200
Region 1: Memory at 60021000 (32-bit, non-prefetchable)
Region 2: Memory at 60020000 (32-bit, non-prefetchable)
Expansion ROM at 60000000 [disabled]
Capabilities: [50] Power Management version 1
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
my kernel .config file:
#
# Automatically generated make config: don't edit
#
#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
CONFIG_M686=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_MICROCODE=m
CONFIG_X86_MSR=m
# CONFIG_X86_CPUID is not set
CONFIG_1GB=y
# CONFIG_2GB is not set
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_SMP is not set
#
# Loadable module support
#
CONFIG_MODULES=y
# CONFIG_MODVERSIONS is not set
CONFIG_KMOD=y
#
# General setup
#
CONFIG_NET=y
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GODIRECT is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_OPTIMIZE is not set
CONFIG_PCI_OLD_PROC=y
# CONFIG_MCA is not set
# CONFIG_VISWS is not set
CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
# CONFIG_BINFMT_JAVA is not set
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
# CONFIG_PARPORT_OTHER is not set
CONFIG_APM=y
# CONFIG_APM_DISABLE_BY_DEFAULT is not set
# CONFIG_APM_IGNORE_USER_SUSPEND is not set
CONFIG_APM_DO_ENABLE=y
CONFIG_APM_CPU_IDLE=y
CONFIG_APM_DISPLAY_BLANK=y
CONFIG_APM_RTC_IS_GMT=y
# CONFIG_APM_ALLOW_INTS is not set
# CONFIG_APM_REAL_MODE_POWER_OFF is not set
# CONFIG_TOSHIBA is not set
#
# Plug and Play support
#
CONFIG_PNP=y
# CONFIG_PNP_PARPORT is not set
#
# Block devices
#
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_IDE=y
#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
CONFIG_BLK_DEV_IDEFLOPPY=m
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_VIA82C586 is not set
# CONFIG_BLK_DEV_CMD646 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_IDE_CHIPSETS is not set
#
# Additional Block Devices
#
CONFIG_BLK_DEV_LOOP=m
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_MD is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_DEV_DAC960 is not set
CONFIG_PARIDE_PARPORT=m
# CONFIG_PARIDE is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_HD is not set
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_NETLINK is not set
# CONFIG_FIREWALL is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_IP_ROUTER is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_ALIAS is not set
# CONFIG_SYN_COOKIES is not set
#
# (it is safe to leave these untouched)
#
# CONFIG_INET_RARP is not set
CONFIG_SKB_LARGE=y
# CONFIG_IPV6 is not set
#
#
#
CONFIG_IPX=m
# CONFIG_IPX_INTERN is not set
# CONFIG_SPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DIVERT is not set
# CONFIG_LLC is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_FASTROUTE is not set
# CONFIG_NET_HW_FLOWCONTROL is not set
# CONFIG_CPU_IS_SLOW is not set
#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set
#
# Telephony Support
#
CONFIG_PHONE=m
CONFIG_PHONE_IXJ=m
#
# SCSI support
#
# CONFIG_SCSI is not set
#
# I2O device support
#
# CONFIG_I2O is not set
# CONFIG_I2O_PCI is not set
# CONFIG_I2O_BLOCK is not set
# CONFIG_I2O_SCSI is not set
#
# Network device support
#
CONFIG_NETDEVICES=y
#
# ARCnet devices
#
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_SB1000 is not set
#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_EL1 is not set
# CONFIG_EL2 is not set
# CONFIG_ELPLUS is not set
# CONFIG_EL16 is not set
# CONFIG_EL3 is not set
# CONFIG_3C515 is not set
# CONFIG_VORTEX is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_RTL8139 is not set
# CONFIG_RTL8139TOO is not set
# CONFIG_NET_ISA is not set
CONFIG_NET_EISA=y
# CONFIG_PCNET32 is not set
# CONFIG_AC3200 is not set
# CONFIG_APRICOT is not set
# CONFIG_CS89x0 is not set
# CONFIG_DM9102 is not set
# CONFIG_DE4X5 is not set
# CONFIG_DEC_ELCP is not set
# CONFIG_DEC_ELCP_OLD is not set
# CONFIG_DEC_ELCP_NG is not set
# CONFIG_DGRS is not set
CONFIG_EEXPRESS_PRO100=y
# CONFIG_LNE390 is not set
# CONFIG_NE3210 is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_TLAN is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_SIS900 is not set
# CONFIG_ES3210 is not set
# CONFIG_EPIC100 is not set
# CONFIG_ZNET is not set
# CONFIG_NET_POCKET is not set
#
# Ethernet (1000 Mbit)
#
# CONFIG_ACENIC is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_SK98LIN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_RADIO is not set
#
# Token ring devices
#
CONFIG_TR=y
CONFIG_IBMTR=m
CONFIG_IBMLS=m
CONFIG_IBMOL=m
# CONFIG_SKTR is not set
# CONFIG_NET_FC is not set
# CONFIG_RCPCI is not set
# CONFIG_SHAPER is not set
#
# Wan interfaces
#
# CONFIG_HOSTESS_SV11 is not set
# CONFIG_COSA is not set
# CONFIG_SEALEVEL_4021 is not set
# CONFIG_SYNCLINK_SYNCPPP is not set
# CONFIG_LANMEDIA is not set
# CONFIG_COMX is not set
# CONFIG_HDLC is not set
# CONFIG_DLCI is not set
# CONFIG_XPEED is not set
# CONFIG_SBNI is not set
#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set
#
# IrDA (infrared) support
#
CONFIG_IRDA=m
#
# IrDA protocols
#
# CONFIG_IRLAN is not set
# CONFIG_IRCOMM is not set
# CONFIG_IRDA_ULTRA is not set
# CONFIG_IRDA_OPTIONS is not set
# CONFIG_IRDA_COMPRESSION is not set
#
# Infrared-port device drivers
#
#
# SIR device drivers
#
# CONFIG_IRTTY_SIR is not set
# CONFIG_IRPORT_SIR is not set
#
# FIR device drivers
#
# CONFIG_NSC_FIR is not set
# CONFIG_WINBOND_FIR is not set
# CONFIG_TOSHIBA_FIR is not set
# CONFIG_SMC_IRCC_FIR is not set
#
# Dongle support
#
# CONFIG_DONGLE is not set
#
# ISDN subsystem
#
# CONFIG_ISDN is not set
#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set
#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
# CONFIG_SERIAL_CONSOLE is not set
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
# CONFIG_PRINTER is not set
CONFIG_MOUSE=y
#
# Mice
#
# CONFIG_ATIXL_BUSMOUSE is not set
# CONFIG_BUSMOUSE is not set
# CONFIG_MS_BUSMOUSE is not set
CONFIG_PSMOUSE=y
CONFIG_82C710_MOUSE=y
# CONFIG_PC110_PAD is not set
#
# Joysticks
#
# CONFIG_JOYSTICK is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_WATCHDOG is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set
# CONFIG_INTEL_RNG is not set
# CONFIG_AGP is not set
# CONFIG_DRM is not set
#
# Video For Linux
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DTLK is not set
#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set
#
# USB support
#
# CONFIG_USB is not set
#
# Filesystems
#
# CONFIG_QUOTA is not set
CONFIG_AUTOFS_FS=y
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=m
# CONFIG_UMSDOS_FS is not set
CONFIG_VFAT_FS=m
CONFIG_ISO9660_FS=y
# CONFIG_JOLIET is not set
# CONFIG_MINIX_FS is not set
CONFIG_NTFS_FS=m
# CONFIG_NTFS_RW is not set
# CONFIG_HPFS_FS is not set
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
# CONFIG_QNX4FS_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EFS_FS is not set
#
# Network File Systems
#
# CONFIG_CODA_FS is not set
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_NFSD is not set
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_SMB_FS=y
# CONFIG_SMB_NLS_DEFAULT is not set
# CONFIG_NCP_FS is not set
#
# Partition Types
#
# CONFIG_BSD_DISKLABEL is not set
CONFIG_MAC_PARTITION=y
# CONFIG_SMD_DISKLABEL is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
CONFIG_NLS=y
#
# Native Language Support
#
CONFIG_NLS_DEFAULT="cp437"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
#
# Console drivers
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VIDEO_SELECT is not set
# CONFIG_MDA_CONSOLE is not set
# CONFIG_FB is not set
#
# Sound
#
CONFIG_SOUND=m
# CONFIG_SOUND_CMPCI is not set
# CONFIG_SOUND_CS4281 is not set
CONFIG_SOUND_FUSION=m
# CONFIG_SOUND_EMU10K1 is not set
# CONFIG_SOUND_ES1370 is not set
# CONFIG_SOUND_ES1371 is not set
# CONFIG_SOUND_MAESTRO is not set
# CONFIG_SOUND_ESSSOLO1 is not set
# CONFIG_SOUND_ICH is not set
# CONFIG_SOUND_SONICVIBES is not set
# CONFIG_SOUND_TRIDENT is not set
# CONFIG_SOUND_MSNDCLAS is not set
# CONFIG_SOUND_MSNDPIN is not set
# CONFIG_SOUND_VIA82CXXX is not set
CONFIG_SOUND_OSS=m
# CONFIG_SOUND_PAS is not set
# CONFIG_SOUND_SB is not set
# CONFIG_SOUND_GUS is not set
# CONFIG_SOUND_MPU401 is not set
# CONFIG_SOUND_PSS is not set
# CONFIG_SOUND_MSS is not set
# CONFIG_SOUND_SSCAPE is not set
# CONFIG_SOUND_TRIX is not set
# CONFIG_SOUND_MAD16 is not set
# CONFIG_SOUND_WAVEFRONT is not set
# CONFIG_SOUND_CS4232 is not set
# CONFIG_SOUND_OPL3SA2 is not set
# CONFIG_SOUND_MAUI is not set
# CONFIG_SOUND_SGALAXY is not set
# CONFIG_SOUND_AD1816 is not set
# CONFIG_SOUND_OPL3SA1 is not set
# CONFIG_SOUND_SOFTOSS is not set
# CONFIG_SOUND_YM3812 is not set
# CONFIG_SOUND_VMIDI is not set
# CONFIG_SOUND_UART6850 is not set
# CONFIG_SOUND_NM256 is not set
# CONFIG_SOUND_YMPCI is not set
# CONFIG_SOUND_YMFPCI is not set
#
# Additional low level sound drivers
#
# CONFIG_LOWLEVEL_SOUND is not set
#
# Kernel hacking
#
CONFIG_MAGIC_SYSRQ=y
Thanks for any help,
Jerry Quinn
[EMAIL PROTECTED]
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: double mmap calls
Date: Mon, 22 Jan 2001 16:51:46 -0000
On 20 Jan 2001 17:07:58 -0800 Linus Torvalds <[EMAIL PROTECTED]> wrote:
| In article <[EMAIL PROTECTED]>,
| John Reiser <[EMAIL PROTECTED]> wrote:
|>#include <stdlib.h>
|>#include <string.h>
|>#include <sys/mman.h>
|>#include <sys/user.h>
|>#include <unistd.h>
|>
|>main()
|>{
|> /* needs error checking, of course! */
|> char const filename[] = "/tmp/DoubleMapXXXXXX";
|> char *const fn = (char *)malloc(1+ sizeof(filename));
|> char *const junk = strcpy(fn, filename);
|> int const fd = mkstemp(fn);
|
| I appreciate the carefulness of this, but why not just do
|
| static char filename[] = "/tmp/DoubleMapXXXXXX";
| int fd = mkstemp(filename);
|
| which is rather simpler and does much less work (the reason for using
| "static char filename[]" at all is obviously so that the string will be
| writable rather than a string constant).
|
| Simplicity is a virtue too.
I'd agree. But I was wondering why not make it even simpler like:
fd = open("/dev/zero",O_RDWR,0);
Since I don't need persistence in a file and I don't need convergence
from other processes, and given that separate opens of /dev/zero don't
actually share, this would seem the way to go.
Maybe John was assuming a broader need than I had.
| Remove the "static" part if you want the string contents re-initialized
| each time (it's slower and uses more memory, but if your function gets
| called multiple times you need to do this).
|
|> int const result = lseek(fd, PAGE_SIZE, SEEK_CUR);
|
| This lseek should be a "ftruncate()", I assume.
|
|> char *const addr1 = mmap(0, PAGE_SIZE,
|> PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|> char *const addr2 = mmap(addr1 + PAGE_SIZE, PAGE_SIZE,
|> PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
| Use MAP_SHARED | MAP_FIXED for the second mmap. Otherwise, depending on
| the phase of the moon and other things, it won't work.
I shouldn't need all this (except for MAP_FIXED) when using /dev/zero,
right?
| Also, to be strictly safe, what you _should_ do is actually make the
| first mmap() be 2 pages in size - so that the system finds an empty
| virtual area of 2 pages for you. The second mmap() then over-mmap's the
| second page.
|
| If you don't do it that way, it's possible that the first mmap just
| finds a gap in the VM space that is exactly one page in size. The second
| mmap would them over-mmap something _else_, and you'd have some really
| hard-to-debug problems.
What I apparently missed was that when mmap(,,,MAP_FIXED,,) is called
on a page that was already mapped, that it would replace the old mapping
on a page-by-page basis.
Doing all the space I need in the first mmap() call, then replacing the
2nd half of the space in the second mmap() call, clears up the issues I
had in this.
| (The above really is nit-picking: it's a damn unlikely schenario. But
| it's the unlikely schenarios that bite you really badly just when you
| don't need them - and if the above is part of a suid application it
| could be a security issue with the user being able to take advantage of
| it some way by causing a certain pattern of mmap's with special input).
Exactly my concerns.
The program could run fine until the next kernel (changes the order some
mapping is done) or the next libc (changes some of the stuff it maps), etc.
And that one would be quite a challenge to debug after it was running since
one would focus on apparent incompatibility.
| So make it something like
|
| ftruncate(fd, PAGE_SIZE);
| addr1 = mmap(0, 2*PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
| addr2 = mmap(addr1+PAGE_SIZE, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED |
|MAP_FIXED, fd, 0);
|
| (with error checking, of course, otherwise my "security" issues are
| totally moot)
So what about using /dev/zero in this case since I only need to use
this in the same process (or a child of this process forked after
all this is set up)?
--
=================================================================
| Phil Howard - KA9WGN | Dallas | http://linuxhomepage.com/ |
| [EMAIL PROTECTED] | Texas, USA | http://phil.ipal.org/ |
=================================================================
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: I/O info by process (not partition or device)?
Date: Mon, 22 Jan 2001 17:06:50 -0000
On Sat, 20 Jan 2001 21:25:44 -0500 Mike Percy <[EMAIL PROTECTED]> wrote:
| Is this info available in the kernel, or somewhere like /proc/xxx/something?
What kind of info do you want? There is info per process about what each fd
has open in /proc/{pidnumber}/fd/{fdnumber} which you could examine.
--
=================================================================
| Phil Howard - KA9WGN | Dallas | http://linuxhomepage.com/ |
| [EMAIL PROTECTED] | Texas, USA | http://phil.ipal.org/ |
=================================================================
------------------------------
From: "Alan Po" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development.apps
Subject: Re: How to write an application similar to "ps -aux"
Date: Tue, 23 Jan 2001 00:59:59 +0800
Dear sir
Thanks your hints again. However is there system function can return the
symbolic name. I use a system function "glob" to get all files in a
directory but cannot get the filename in the link.
Thanks again.
Alan Po
"Josef Moellers" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
Alan Po wrote:
>
> Dear all
>
> Alan Po again. This time is the question of a common command "ps". I need
to
> write an application to show all the process id (pid) of the Linux. The
> result is same as "ps -aux". However, I have try to find the source code
of
> "ps" but fail. Please give some advices or suggestion or where can find
the
> source code of "ps".
Although I should not do your homework, I'll give you some hints:
1) /proc
2) rpm -qif `which ps`
--
Josef M�llers (Pinguinpfleger bei FSC)
If failure had no penalty success would not be a prize (T. Pratchett)
------------------------------
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