Boa web server configuration in uClinux

Configuration of Boa web server in uClinux by wzc0066 Source: www.mcuos.com Body: I. Environment preparation Compiling environment: uClinux-dist-20040408.tar.gz Compilation tool: Arm-elf -* Model: smartarm2200 Ii. Compilation Configuration 1. Select kernel/library/defaults selection-> customize vendor/user settings-> network applications-> boa and compile 2. Configure the Boa web server: 2.1 modify the file uClinux-Dist/user/BOA/src/defines. h Change # define server_root "/home/httpd" to # define server_root "/etc/boa" This means to set the serverroot path of the BOA Web server to/etc/boa. 2.2 edit the configuration file uClinux-Dist/user/BOA/examples/boa. conf as follows: Port 80 User 0 Group 0 DocumentRoot/var/WWW Userdir public_html Directoryindex index.html Keepalivemax 1000 Keepalivetimeout 10 Defaulttype text/html Addtype application/X-httpd-CGI ScriptAlias/cgi-bin // var/www/cgi-bin/ Addtype image/JPEG JPG Description of the configuration file: (1) The * log options are commented out. Otherwise, the system prompts that these * log tags are not recognized when boa is started; (2) The "mime. types" option is not added. For details, see the garbled characters in the BOA test image; (3) the configuration file boa. conf needs to be copied to serverroot. You can manually or modify the MAKEFILE file (uClinux-Dist/vendors/Philips/lpc2200/makefile; If the location of the configuration file boa. conf is incorrect, the configuration file "authentication password file for/cgi-bin/not found!" is displayed !" Errors! Iii. debugging 1. If boa & (or BOA-C/var/WWW & is run, but DocumentRoot/var/WWW has been specified, run the Command outside ), will get the error message "kmod: failed to Exec/sbin/modprobe-S-knet-pf-1, errno = 2", at this time Boa web server is not available! 2. Add and compile kernel/library/defaults selection-> customize vendor/user settings-> busybox-> modprobe and re-compile the code. Then, run boa & and the following error message is displayed: _ Alloc_pages: 6-order allocation failed (Green = 0x1f0/0) Allocation of length 164704 from process 193 failed Buffer Memory: 52kb Cache memory: 1076kb Free pages: 876kb (0kb highmem) Zonema freepages: 0kb ZONE: normal freepages: 876kb ZONE: highmem freepages: 0kb (Active: 94, inactive: 188, free: 219) = 0 KB) 25 * 4kb 21 * 8kb 12 * 16kb 5 * 32kb 2 * 64kb 1 * 128kb 0 * 256kb 0 * 512kb 0 * 1024kb 0 * 2048kb = 876kb) = 0 KB) Unable to MMAP process text, errno 12 Kmod: failed to Exec/sbin/modprobe-S-K net-pf-1, errno = 12 _ Alloc_pages: 6-order allocation failed (Green = 0x1f0/0) Allocation of length 164704 from process 195 failed Buffer Memory: 52kb Cache memory: 1076kb Free pages: 700kb (0kb highmem) Zonema freepages: 0kb ZONE: normal freepages: 700kb ZONE: highmem freepages: 0kb (Active: 47, inactive: 235, free: 175) = 0 KB) 25 * 4kb 19 * 8kb 12 * 16kb 4 * 32kb 2 * 64kb 0 * 128kb 0 * 256kb 0 * 512kb 0 * 1024kb 0 * 2048kb = 700kb) = 0 KB) Unable to MMAP process text, errno 12 Munmap of non-mmaped memory by process 195 (insmod): 817fb000 Munmap of non-mmaped memory by process 195 (insmod): 815863a0 Unhandled fault: External abort on linefetch (F4) at 0x00000001 The fault-common.c (97): start_code = 0x81380040, start_stack = 0x815bff74) PID 182: Failed 256 Memory Allocation Error! But now Boa web server is accessible! 3. Add and compile kernel/library/defaults selection-> customize kernel settings-> networking options-> Unix domain sockets and re-compile it. Besides a PID, no extra information! (What is the function of this option? I still don't know !) IV. Other Instructions Refer is included in the CD )! 2. During Web Testing, HTML files should be stored in the/var/WWW directory, and CGI programs should be stored in the/var/www/cgi-bin directory, these are clearly written in the configuration file! 3. You can also perform Web Testing through NFS (this saves you the trouble of writing multiple times). For details about NFS configuration, see http://wzc0066.blog.hexun.com/651_93_d.html. V. Existing Problems At present, CGI, JavaScript, Image Browsing and other tests are all good! However, when testing MP3, it still does not work, probably because it does not support large files! In my opinion, it seems that the maximum memory allocated each time in uClinux is 128 kb by default. Therefore, if you run a file larger than kb, an error will occur! I also saw a piece of information saying that a large file can be supported after selecting a configuration in the kernel hacking, but I cannot find the one I mentioned on the Internet in the 2.4.x kernel! The following error message is displayed when you click an MP3 file (MB: Allocation of length 2502723 from process 24 failed Buffer Memory: 56kb Cache memory: 2744kb Free pages: 2420kb (0kb highmem) Zonema freepages: 0kb ZONE: normal freepages: 2420kb ZONE: highmem freepages: 0kb (Active: 98, inactive: 602, free: 605) = 0 KB) 7 * 4kb 9 * 8kb 11 * 16kb 7 * 32kb 4 * 64kb 1 * 128kb 0 * 256kb 1 * 512kb 1 * 1024kb 0 * 2048kb = 2420kb) = 0 KB) Munmap of non-mmaped memory by process 24 (BOA): ffffffff Although it is still not perfect, it is still okay to use it in general! This is the general process of configuring my Boa web server! Latest Update: AboutLarge Memory Allocation in uClinux When you run an application that exceeds 1 MB, the uClinux system reports a memory allocation error! When compiling the kernel, You need to select the "allow allocating large blocks (> 1 MB) of memory" option to solve the problem! However, it is not easy for new users to locate this option. The detailed operation process is as follows: The macro corresponding to this configuration option is: config_no_mmu_large_allocs. First, select prompt for development and/or incomplete code/drivers in code maturity level options. Then you can see the non power-of-2 kernel Allocator (experimental) option in the kernel hacking, Select this option and you will see allow allocating large blocks (> 1 MB) of memory. Select this option!

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