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C Bibliothèques avec Makefile

2013-03-01 4 views
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J'essaie de créer un module noyau qui doit générer des nombres aléatoires pour fonctionner correctement. Pour y parvenir, j'ai inclus <stdlib.h> et <time.h> à mon code mais je ne peux pas compiler le module avec la commande make.C Bibliothèques avec Makefile

J'ai cherché de l'aide sur le Web et j'ai essayé d'inclure EXTRA_CFLAGS := -I/usr/include dans le fichier Makefile, mais après cela, je continue de recevoir encore plus d'erreurs.

Voici le message d'erreur que j'ai reçu:

[email protected]:~/Modulos/DropProb$ make 
make -C /lib/modules/3.2.0-37-generic/build SUBDIRS=/home/kernel/Modulos/DropProb modules 
make[1]: Entering directory `/usr/src/linux-headers-3.2.0-37-generic' 
    CC [M] /home/kernel/Modulos/DropProb/drop_prob.o 
In file included from /home/kernel/Modulos/DropProb/drop_prob.c:15:0: 
/usr/include/stdlib.h: In function ‘atof’: 
/usr/include/stdlib.h:280:1: error: SSE register return with SSE disabled 
In file included from include/linux/compiler.h:48:0, 
       from include/linux/linkage.h:4, 
       from include/linux/kernel.h:13, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:19: 
include/linux/compiler-gcc.h: At top level: 
include/linux/compiler-gcc.h:87:0: warning: "__attribute_const__" redefined [enabled by default] 
/usr/include/sys/cdefs.h:241:0: note: this is the location of the previous definition 
In file included from include/linux/compiler.h:48:0, 
       from include/linux/linkage.h:4, 
       from include/linux/kernel.h:13, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:19: 
include/linux/compiler-gcc.h:106:0: warning: "__always_inline" redefined [enabled by default] 
/usr/include/sys/cdefs.h:312:0: note: this is the location of the previous definition 
In file included from include/linux/kernel.h:15:0, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:19: 
include/linux/types.h:23:26: error: conflicting types for ‘fd_set’ 
/usr/include/sys/select.h:76:5: note: previous declaration of ‘fd_set’ was here 
include/linux/types.h:24:25: error: conflicting types for ‘dev_t’ 
/usr/include/sys/types.h:61:17: note: previous declaration of ‘dev_t’ was here 
include/linux/types.h:33:26: error: conflicting types for ‘timer_t’ 
/usr/include/time.h:104:19: note: previous declaration of ‘timer_t’ was here 
include/linux/types.h:53:26: error: conflicting types for ‘loff_t’ 
/usr/include/sys/types.h:45:18: note: previous declaration of ‘loff_t’ was here 
include/linux/types.h:120:17: error: conflicting types for ‘u_int64_t’ 
/usr/include/sys/types.h:204:1: note: previous declaration of ‘u_int64_t’ was here 
include/linux/types.h:121:17: error: conflicting types for ‘int64_t’ 
/usr/include/sys/types.h:198:1: note: previous declaration of ‘int64_t’ was here 
include/linux/types.h:142:23: error: conflicting types for ‘blkcnt_t’ 
/usr/include/sys/types.h:236:20: note: previous declaration of ‘blkcnt_t’ was here 
In file included from include/linux/stat.h:60:0, 
       from include/linux/module.h:10, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:20: 
include/linux/time.h:14:8: error: redefinition of ‘struct timespec’ 
/usr/include/time.h:120:8: note: originally defined here 
include/linux/time.h:20:8: error: redefinition of ‘struct timeval’ 
/usr/include/bits/time.h:31:8: note: originally defined here 
include/linux/time.h:74:22: error: conflicting types for ‘mktime’ 
/usr/include/time.h:193:15: note: previous declaration of ‘mktime’ was here 
include/linux/time.h:206:8: error: redefinition of ‘struct tm’ 
/usr/include/time.h:133:8: note: originally defined here 
include/linux/time.h:289:0: warning: "FD_SET" redefined [enabled by default] 
/usr/include/sys/select.h:91:0: note: this is the location of the previous definition 
include/linux/time.h:290:0: warning: "FD_CLR" redefined [enabled by default] 
/usr/include/sys/select.h:92:0: note: this is the location of the previous definition 
include/linux/time.h:291:0: warning: "FD_ISSET" redefined [enabled by default] 
/usr/include/sys/select.h:93:0: note: this is the location of the previous definition 
include/linux/time.h:292:0: warning: "FD_ZERO" redefined [enabled by default] 
/usr/include/sys/select.h:94:0: note: this is the location of the previous definition 
include/linux/time.h:302:8: error: redefinition of ‘struct itimerspec’ 
/usr/include/time.h:161:8: note: originally defined here 
include/linux/time.h:337:0: warning: "TIMER_ABSTIME" redefined [enabled by default] 
/usr/include/bits/time.h:82:0: note: this is the location of the previous definition 
In file included from include/linux/mmzone.h:9:0, 
       from include/linux/gfp.h:4, 
       from include/linux/kmod.h:22, 
       from include/linux/module.h:13, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:20: 
include/linux/wait.h:4:0: warning: "WNOHANG" redefined [enabled by default] 
/usr/include/bits/waitflags.h:26:0: note: this is the location of the previous definition 
include/linux/wait.h:5:0: warning: "WUNTRACED" redefined [enabled by default] 
/usr/include/bits/waitflags.h:27:0: note: this is the location of the previous definition 
include/linux/wait.h:6:0: warning: "WSTOPPED" redefined [enabled by default] 
/usr/include/bits/waitflags.h:30:0: note: this is the location of the previous definition 
include/linux/wait.h:7:0: warning: "WEXITED" redefined [enabled by default] 
/usr/include/bits/waitflags.h:31:0: note: this is the location of the previous definition 
include/linux/wait.h:8:0: warning: "WCONTINUED" redefined [enabled by default] 
/usr/include/bits/waitflags.h:32:0: note: this is the location of the previous definition 
In file included from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/param.h:1:0, 
       from include/linux/param.h:4, 
       from include/linux/timex.h:172, 
       from include/linux/jiffies.h:8, 
       from include/linux/ktime.h:25, 
       from include/linux/timer.h:5, 
       from include/linux/workqueue.h:8, 
       from include/linux/pm.h:25, 
       from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/apic.h:5, 
       from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/smp.h:13, 
       from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/mmzone_64.h:10, 
       from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/mmzone.h:4, 
       from include/linux/mmzone.h:815, 
       from include/linux/gfp.h:4, 
       from include/linux/kmod.h:22, 
       from include/linux/module.h:13, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:20: 
include/asm-generic/param.h:7:0: warning: "CLOCKS_PER_SEC" redefined [enabled by default] 
/usr/include/bits/time.h:49:0: note: this is the location of the previous definition 
In file included from include/linux/signal.h:4:0, 
       from include/linux/sched.h:73, 
       from /usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/compat.h:8, 
       from include/linux/compat.h:18, 
       from include/linux/ethtool.h:17, 
       from include/linux/netdevice.h:47, 
       from include/net/sock.h:50, 
       from include/linux/tcp.h:211, 
       from /home/kernel/Modulos/DropProb/drop_prob.c:25: 
/usr/src/linux-headers-3.2.0-37-generic/arch/x86/include/asm/signal.h:32:3: error: conflicting types for ‘sigset_t’ 
/usr/include/sys/select.h:38:20: note: previous declaration of ‘sigset_t’ was here 
/home/kernel/Modulos/DropProb/drop_prob.c: In function ‘drop_tcp_hookfn’: 
/home/kernel/Modulos/DropProb/drop_prob.c:76:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 
/home/kernel/Modulos/DropProb/drop_prob.c: At top level: 
/home/kernel/Modulos/DropProb/drop_prob.c:31:36: warning: ‘nfho_out’ defined but not used [-Wunused-variable] 
make[2]: *** [/home/kernel/Modulos/DropProb/drop_prob.o] Error 1 
make[1]: *** [_module_/home/kernel/Modulos/DropProb] Error 2 
make[1]: Leaving directory `/usr/src/linux-headers-3.2.0-37-generic' 
make: *** [default] Error 2

Source

2013-03-01 Marx Guimarães

Répondre

0

Vous n'êtes pas autorisé à inclure le stdlib.h de la bibliothèque libc dans le noyau (même dans les modules).

Jetez un oeil à cette page la liste des fonctions de la bibliothèque C de base qui sont autorisés et comment les utiliser: http://www.kernel.org/doc/htmldocs/kernel-api/libc.html

Si vous cherchez à obtenir l'heure actuelle dans l'espace du noyau, vous pouvez prendre regardez la fonction time_to_tm. Il renverrait le structure tm. Timezone devrait également être disponible dans une variable appelée sys_tz, et peut être utilisé pour ajuster le décalage et obtenir l'heure locale.

Source

2013-03-01 01:29:18 Tuxdude

+0

En fait, je veux générer des nombres aléatoires, y at-il d'autres bibliothèques ou méthodes que je peux utiliser pour faire cela? –

+0

Le noyau possède un générateur de nombres aléatoires accessible par '/ dev/random'. Vous voudrez peut-être vérifier s'il existe une méthode dans ce pilote de caractères que vous pourriez invoquer à partir de votre module. – Tuxdude

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