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Accomodate the fact that newer libc versions may in fact not
contain query_module and friends and more
This commit is contained in:
parent
95b26250a7
commit
ec359e9ebb
@ -23,22 +23,33 @@
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#include <stdio.h>
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#include <stdio.h>
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#include <errno.h>
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#include <errno.h>
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#include <unistd.h>
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#include <unistd.h>
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/* Kernel headers before 2.1.mumble need this on the Alpha to get
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_syscall* defined. */
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#define __LIBRARY__
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#include <sys/syscall.h>
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#include <sys/syscall.h>
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#include "libbb.h"
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#include "libbb.h"
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/* These syscalls are not included in very old glibc versions */
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/* These syscalls are not included in very old glibc versions */
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#if ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
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int delete_module(const char *name)
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int delete_module(const char *name)
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{
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{
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#ifndef __NR_delete_module
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#warning This kernel does not support the delete_module syscall
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#warning -> The delete_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_delete_module, name));
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return(syscall(__NR_delete_module, name));
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#endif
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}
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}
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int get_kernel_syms(__ptr_t ks)
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int get_kernel_syms(__ptr_t ks)
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{
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{
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#ifndef __NR_get_kernel_syms
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#warning This kernel does not support the get_kernel_syms syscall
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#warning -> The get_kernel_syms system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_get_kernel_syms, ks));
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return(syscall(__NR_get_kernel_syms, ks));
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#endif
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}
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}
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/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
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/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
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@ -46,7 +57,14 @@ int get_kernel_syms(__ptr_t ks)
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* and let the kernel cope with whatever it gets. Its good at that. */
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* and let the kernel cope with whatever it gets. Its good at that. */
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int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
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int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
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{
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{
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#ifndef __NR_init_module
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#warning This kernel does not support the init_module syscall
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#warning -> The init_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_init_module, first, second, third, fourth, fifth));
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return(syscall(__NR_init_module, first, second, third, fourth, fifth));
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#endif
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}
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}
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int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
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int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
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@ -66,6 +84,12 @@ int query_module(const char *name, int which, void *buf, size_t bufsize, size_t
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/* Jump through hoops to fixup error return codes */
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/* Jump through hoops to fixup error return codes */
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unsigned long create_module(const char *name, size_t size)
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unsigned long create_module(const char *name, size_t size)
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{
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{
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#ifndef __NR_create_module
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#warning This kernel does not support the create_module syscall
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#warning -> The create_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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long ret = syscall(__NR_create_module, name, size);
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long ret = syscall(__NR_create_module, name, size);
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if (ret == -1 && errno > 125) {
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if (ret == -1 && errno > 125) {
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@ -73,9 +97,8 @@ unsigned long create_module(const char *name, size_t size)
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errno = 0;
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errno = 0;
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}
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}
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return ret;
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return ret;
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}
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#endif
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#endif
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}
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/* END CODE */
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/* END CODE */
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