diff options
| -rw-r--r-- | Documentation/filesystems/bfs.txt | 10 | ||||
| -rw-r--r-- | Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl | 2 | ||||
| -rw-r--r-- | Documentation/telephony/ixj.txt | 13 | ||||
| -rw-r--r-- | Documentation/video4linux/w9968cf.txt | 3 | ||||
| -rw-r--r-- | arch/blackfin/Kconfig | 4 | ||||
| -rw-r--r-- | arch/sparc64/kernel/process.c | 6 | ||||
| -rw-r--r-- | arch/sparc64/kernel/traps.c | 3 | ||||
| -rw-r--r-- | arch/xtensa/Kconfig | 4 | ||||
| -rw-r--r-- | include/linux/kmod.h | 5 | ||||
| -rw-r--r-- | include/linux/module.h | 50 | ||||
| -rw-r--r-- | init/Kconfig | 15 | ||||
| -rw-r--r-- | kernel/exec_domain.c | 2 | ||||
| -rw-r--r-- | kernel/kmod.c | 2 | ||||
| -rw-r--r-- | kernel/module.c | 336 | ||||
| -rw-r--r-- | kernel/sysctl.c | 4 | ||||
| -rw-r--r-- | lib/textsearch.c | 2 |
16 files changed, 259 insertions, 202 deletions
diff --git a/Documentation/filesystems/bfs.txt b/Documentation/filesystems/bfs.txt index ea825e1..78043d5 100644 --- a/Documentation/filesystems/bfs.txt +++ b/Documentation/filesystems/bfs.txt @@ -26,11 +26,11 @@ You can simplify mounting by just typing: this will allocate the first available loopback device (and load loop.o kernel module if necessary) automatically. If the loopback driver is not -loaded automatically, make sure that your kernel is compiled with kmod -support (CONFIG_KMOD) enabled. Beware that umount will not -deallocate /dev/loopN device if /etc/mtab file on your system is a -symbolic link to /proc/mounts. You will need to do it manually using -"-d" switch of losetup(8). Read losetup(8) manpage for more info. +loaded automatically, make sure that you have compiled the module and +that modprobe is functioning. Beware that umount will not deallocate +/dev/loopN device if /etc/mtab file on your system is a symbolic link to +/proc/mounts. You will need to do it manually using "-d" switch of +losetup(8). Read losetup(8) manpage for more info. To create the BFS image under UnixWare you need to find out first which slice contains it. The command prtvtoc(1M) is your friend: diff --git a/Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl b/Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl index c4d2e35..9d644f7 100644 --- a/Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl +++ b/Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl @@ -42,7 +42,7 @@ <sect1><title>Device Components</title> !Esound/core/device.c </sect1> - <sect1><title>KMOD and Device File Entries</title> + <sect1><title>Module requests and Device File Entries</title> !Esound/core/sound.c </sect1> <sect1><title>Memory Management Helpers</title> diff --git a/Documentation/telephony/ixj.txt b/Documentation/telephony/ixj.txt index 621024f..44d12400 100644 --- a/Documentation/telephony/ixj.txt +++ b/Documentation/telephony/ixj.txt @@ -305,21 +305,14 @@ driver, like this: which will result in the needed drivers getting loaded automatically. - g. if you are planning on using kerneld to automatically load the -module for you, then you need to edit /etc/conf.modules and add the + g. if you are planning on having the kernel automatically request +the module for you, then you need to edit /etc/conf.modules and add the following lines: options ixj dspio=0x340 xio=0x330 ixjdebug=0 If you do this, then when you execute an application that uses the -module kerneld will load the module for you. Note that to do this, -you need to have your kernel set to support kerneld. You can check -for this by looking at /usr/src/linux/.config and you should see this: - - # Loadable module support - # - <snip> - CONFIG_KMOD=y +module the kernel will request that it is loaded. h. if you want non-root users to be able to read and write to the ixj devices (this is a good idea!) you should do the following: diff --git a/Documentation/video4linux/w9968cf.txt b/Documentation/video4linux/w9968cf.txt index e0bba83..05138e8 100644 --- a/Documentation/video4linux/w9968cf.txt +++ b/Documentation/video4linux/w9968cf.txt @@ -193,9 +193,6 @@ Description: Automatic 'ovcamchip' module loading: 0 disabled, 1 enabled. loads that module automatically. This action is performed as once soon as the 'w9968cf' module is loaded into memory. Default: 1 -Note: The kernel must be compiled with the CONFIG_KMOD option - enabled for the 'ovcamchip' module to be loaded and for - this parameter to be present. ------------------------------------------------------------------------------- Name: simcams Type: int diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index b87634e..b83b8ef 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -873,8 +873,8 @@ config HOTPLUG plugged into slots found on all modern laptop computers. Another example, used on modern desktops as well as laptops, is USB. - Enable HOTPLUG and KMOD, and build a modular kernel. Get agent - software (at <http://linux-hotplug.sourceforge.net/>) and install it. + Enable HOTPLUG and build a modular kernel. Get agent software + (from <http://linux-hotplug.sourceforge.net/>) and install it. Then your kernel will automatically call out to a user mode "policy agent" (/sbin/hotplug) to load modules and set up software needed to use devices as you hotplug them. diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index c1f1ff2..31ea752 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -683,9 +683,9 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, ((unsigned long) child_sf) - STACK_BIAS; /* Special case, if we are spawning a kernel thread from - * a userspace task (via KMOD, NFS, or similar) we must - * disable performance counters in the child because the - * address space and protection realm are changing. + * a userspace task (usermode helper, NFS or similar), we + * must disable performance counters in the child because + * the address space and protection realm are changing. */ if (t->flags & _TIF_PERFCTR) { t->user_cntd0 = t->user_cntd1 = NULL; diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index 0aa819c..bd30ecb 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -36,9 +36,6 @@ #include <asm/processor.h> #include <asm/timer.h> #include <asm/head.h> -#ifdef CONFIG_KMOD -#include <linux/kmod.h> -#endif #include <asm/prom.h> #include "entry.h" diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 9fc8551..02e417d 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -194,8 +194,8 @@ config HOTPLUG plugged into slots found on all modern laptop computers. Another example, used on modern desktops as well as laptops, is USB. - Enable HOTPLUG and KMOD, and build a modular kernel. Get agent - software (at <http://linux-hotplug.sourceforge.net/>) and install it. + Enable HOTPLUG and build a modular kernel. Get agent software + (from <http://linux-hotplug.sourceforge.net/>) and install it. Then your kernel will automatically call out to a user mode "policy agent" (/sbin/hotplug) to load modules and set up software needed to use devices as you hotplug them. diff --git a/include/linux/kmod.h b/include/linux/kmod.h index 5dc1384..0509c4c 100644 --- a/include/linux/kmod.h +++ b/include/linux/kmod.h @@ -25,15 +25,16 @@ #define KMOD_PATH_LEN 256 -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES /* modprobe exit status on success, -ve on error. Return value * usually useless though. */ extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2))); +#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) #else static inline int request_module(const char * name, ...) { return -ENOSYS; } +#define try_then_request_module(x, mod...) (x) #endif -#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) struct key; struct file; diff --git a/include/linux/module.h b/include/linux/module.h index 3e03b1a..fce15eb 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -249,27 +249,30 @@ struct module /* Exported symbols */ const struct kernel_symbol *syms; - unsigned int num_syms; const unsigned long *crcs; + unsigned int num_syms; /* GPL-only exported symbols. */ - const struct kernel_symbol *gpl_syms; unsigned int num_gpl_syms; + const struct kernel_symbol *gpl_syms; const unsigned long *gpl_crcs; +#ifdef CONFIG_UNUSED_SYMBOLS /* unused exported symbols. */ const struct kernel_symbol *unused_syms; - unsigned int num_unused_syms; const unsigned long *unused_crcs; + unsigned int num_unused_syms; + /* GPL-only, unused exported symbols. */ - const struct kernel_symbol *unused_gpl_syms; unsigned int num_unused_gpl_syms; + const struct kernel_symbol *unused_gpl_syms; const unsigned long *unused_gpl_crcs; +#endif /* symbols that will be GPL-only in the near future. */ const struct kernel_symbol *gpl_future_syms; - unsigned int num_gpl_future_syms; const unsigned long *gpl_future_crcs; + unsigned int num_gpl_future_syms; /* Exception table */ unsigned int num_exentries; @@ -285,10 +288,10 @@ struct module void *module_core; /* Here are the sizes of the init and core sections */ - unsigned long init_size, core_size; + unsigned int init_size, core_size; /* The size of the executable code in each section. */ - unsigned long init_text_size, core_text_size; + unsigned int init_text_size, core_text_size; /* The handle returned from unwind_add_table. */ void *unwind_info; @@ -300,29 +303,15 @@ struct module #ifdef CONFIG_GENERIC_BUG /* Support for BUG */ + unsigned num_bugs; struct list_head bug_list; struct bug_entry *bug_table; - unsigned num_bugs; -#endif - -#ifdef CONFIG_MODULE_UNLOAD - /* Reference counts */ - struct module_ref ref[NR_CPUS]; - - /* What modules depend on me? */ - struct list_head modules_which_use_me; - - /* Who is waiting for us to be unloaded */ - struct task_struct *waiter; - - /* Destruction function. */ - void (*exit)(void); #endif #ifdef CONFIG_KALLSYMS /* We keep the symbol and string tables for kallsyms. */ Elf_Sym *symtab; - unsigned long num_symtab; + unsigned int num_symtab; char *strtab; /* Section attributes */ @@ -342,6 +331,21 @@ struct module struct marker *markers; unsigned int num_markers; #endif + +#ifdef CONFIG_MODULE_UNLOAD + /* What modules depend on me? */ + struct list_head modules_which_use_me; + + /* Who is waiting for us to be unloaded */ + struct task_struct *waiter; + + /* Destruction function. */ + void (*exit)(void); + + /* Reference counts */ + struct module_ref ref[NR_CPUS]; +#endif + }; #ifndef MODULE_ARCH_INIT #define MODULE_ARCH_INIT {} diff --git a/init/Kconfig b/init/Kconfig index 6199d11..a50bdfed 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -856,8 +856,8 @@ config MODULE_UNLOAD help Without this option you will not be able to unload any modules (note that some modules may not be unloadable - anyway), which makes your kernel slightly smaller and - simpler. If unsure, say Y. + anyway), which makes your kernel smaller, faster + and simpler. If unsure, say Y. config MODULE_FORCE_UNLOAD bool "Forced module unloading" @@ -893,16 +893,11 @@ config MODULE_SRCVERSION_ALL will be created for all modules. If unsure, say N. config KMOD - bool "Automatic kernel module loading" + def_bool y depends on MODULES help - Normally when you have selected some parts of the kernel to - be created as kernel modules, you must load them (using the - "modprobe" command) before you can use them. If you say Y - here, some parts of the kernel will be able to load modules - automatically: when a part of the kernel needs a module, it - runs modprobe with the appropriate arguments, thereby - loading the module if it is available. If unsure, say Y. + This is being removed soon. These days, CONFIG_MODULES + implies CONFIG_KMOD, so use that instead. config STOP_MACHINE bool diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c index a9e6bad..c1ef192 100644 --- a/kernel/exec_domain.c +++ b/kernel/exec_domain.c @@ -65,7 +65,7 @@ lookup_exec_domain(u_long personality) goto out; } -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES read_unlock(&exec_domains_lock); request_module("personality-%ld", pers); read_lock(&exec_domains_lock); diff --git a/kernel/kmod.c b/kernel/kmod.c index 8df97d3..90d7af1 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -42,7 +42,7 @@ extern int max_threads; static struct workqueue_struct *khelper_wq; -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES /* modprobe_path is set via /proc/sys. diff --git a/kernel/module.c b/kernel/module.c index 5f80478..d8b5605 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -70,6 +70,9 @@ static DECLARE_WAIT_QUEUE_HEAD(module_wq); static BLOCKING_NOTIFIER_HEAD(module_notify_list); +/* Bounds of module allocation, for speeding __module_text_address */ +static unsigned long module_addr_min = -1UL, module_addr_max = 0; + int register_module_notifier(struct notifier_block * nb) { return blocking_notifier_chain_register(&module_notify_list, nb); @@ -134,17 +137,19 @@ extern const struct kernel_symbol __start___ksymtab_gpl[]; extern const struct kernel_symbol __stop___ksymtab_gpl[]; extern const struct kernel_symbol __start___ksymtab_gpl_future[]; extern const struct kernel_symbol __stop___ksymtab_gpl_future[]; -extern const struct kernel_symbol __start___ksymtab_unused[]; -extern const struct kernel_symbol __stop___ksymtab_unused[]; -extern const struct kernel_symbol __start___ksymtab_unused_gpl[]; -extern const struct kernel_symbol __stop___ksymtab_unused_gpl[]; extern const struct kernel_symbol __start___ksymtab_gpl_future[]; extern const struct kernel_symbol __stop___ksymtab_gpl_future[]; extern const unsigned long __start___kcrctab[]; extern const unsigned long __start___kcrctab_gpl[]; extern const unsigned long __start___kcrctab_gpl_future[]; +#ifdef CONFIG_UNUSED_SYMBOLS +extern const struct kernel_symbol __start___ksymtab_unused[]; +extern const struct kernel_symbol __stop___ksymtab_unused[]; +extern const struct kernel_symbol __start___ksymtab_unused_gpl[]; +extern const struct kernel_symbol __stop___ksymtab_unused_gpl[]; extern const unsigned long __start___kcrctab_unused[]; extern const unsigned long __start___kcrctab_unused_gpl[]; +#endif #ifndef CONFIG_MODVERSIONS #define symversion(base, idx) NULL @@ -152,156 +157,186 @@ extern const unsigned long __start___kcrctab_unused_gpl[]; #define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL) #endif -/* lookup symbol in given range of kernel_symbols */ -static const struct kernel_symbol *lookup_symbol(const char *name, - const struct kernel_symbol *start, - const struct kernel_symbol *stop) -{ - const struct kernel_symbol *ks = start; - for (; ks < stop; ks++) - if (strcmp(ks->name, name) == 0) - return ks; - return NULL; -} - -static bool always_ok(bool gplok, bool warn, const char *name) -{ - return true; -} - -static bool printk_unused_warning(bool gplok, bool warn, const char *name) -{ - if (warn) { - printk(KERN_WARNING "Symbol %s is marked as UNUSED, " - "however this module is using it.\n", name); - printk(KERN_WARNING - "This symbol will go away in the future.\n"); - printk(KERN_WARNING - "Please evalute if this is the right api to use and if " - "it really is, submit a report the linux kernel " - "mailinglist together with submitting your code for " - "inclusion.\n"); - } - return true; -} - -static bool gpl_only_unused_warning(bool gplok, bool warn, const char *name) -{ - if (!gplok) - return false; - return printk_unused_warning(gplok, warn, name); -} - -static bool gpl_only(bool gplok, bool warn, const char *name) -{ - return gplok; -} - -static bool warn_if_not_gpl(bool gplok, bool warn, const char *name) -{ - if (!gplok && warn) { - printk(KERN_WARNING "Symbol %s is being used " - "by a non-GPL module, which will not " - "be allowed in the future\n", name); - printk(KERN_WARNING "Please see the file " - "Documentation/feature-removal-schedule.txt " - "in the kernel source tree for more details.\n"); - } - return true; -} - struct symsearch { const struct kernel_symbol *start, *stop; const unsigned long *crcs; - bool (*check)(bool gplok, bool warn, const char *name); + enum { + NOT_GPL_ONLY, + GPL_ONLY, + WILL_BE_GPL_ONLY, + } licence; + bool unused; }; -/* Look through this array of symbol tables for a symbol match which - * passes the check function. */ -static const struct kernel_symbol *search_symarrays(const struct symsearch *arr, - unsigned int num, - const char *name, - bool gplok, - bool warn, - const unsigned long **crc) +static bool each_symbol_in_section(const struct symsearch *arr, + unsigned int arrsize, + struct module *owner, + bool (*fn)(const struct symsearch *syms, + struct module *owner, + unsigned int symnum, void *data), + void *data) { - unsigned int i; - const struct kernel_symbol *ks; + unsigned int i, j; - for (i = 0; i < num; i++) { - ks = lookup_symbol(name, arr[i].start, arr[i].stop); - if (!ks || !arr[i].check(gplok, warn, name)) - continue; - - if (crc) - *crc = symversion(arr[i].crcs, ks - arr[i].start); - return ks; + for (j = 0; j < arrsize; j++) { + for (i = 0; i < arr[j].stop - arr[j].start; i++) + if (fn(&arr[j], owner, i, data)) + return true; } - return NULL; + + return false; } -/* Find a symbol, return value, (optional) crc and (optional) module - * which owns it */ -static unsigned long find_symbol(const char *name, - struct module **owner, - const unsigned long **crc, - bool gplok, - bool warn) +/* Returns true as soon as fn returns true, otherwise false. */ +static bool each_symbol(bool (*fn)(const struct symsearch *arr, + struct module *owner, + unsigned int symnum, void *data), + void *data) { struct module *mod; - const struct kernel_symbol *ks; const struct symsearch arr[] = { { __start___ksymtab, __stop___ksymtab, __start___kcrctab, - always_ok }, + NOT_GPL_ONLY, false }, { __start___ksymtab_gpl, __stop___ksymtab_gpl, - __start___kcrctab_gpl, gpl_only }, + __start___kcrctab_gpl, + GPL_ONLY, false }, { __start___ksymtab_gpl_future, __stop___ksymtab_gpl_future, - __start___kcrctab_gpl_future, warn_if_not_gpl }, + __start___kcrctab_gpl_future, + WILL_BE_GPL_ONLY, false }, +#ifdef CONFIG_UNUSED_SYMBOLS { __start___ksymtab_unused, __stop___ksymtab_unused, - __start___kcrctab_unused, printk_unused_warning }, + __start___kcrctab_unused, + NOT_GPL_ONLY, true }, { __start___ksymtab_unused_gpl, __stop___ksymtab_unused_gpl, - __start___kcrctab_unused_gpl, gpl_only_unused_warning }, + __start___kcrctab_unused_gpl, + GPL_ONLY, true }, +#endif }; - /* Core kernel first. */ - ks = search_symarrays(arr, ARRAY_SIZE(arr), name, gplok, warn, crc); - if (ks) { - if (owner) - *owner = NULL; - return ks->value; - } + if (each_symbol_in_section(arr, ARRAY_SIZE(arr), NULL, fn, data)) + return true; - /* Now try modules. */ list_for_each_entry(mod, &modules, list) { struct symsearch arr[] = { { mod->syms, mod->syms + mod->num_syms, mod->crcs, - always_ok }, + NOT_GPL_ONLY, false }, { mod->gpl_syms, mod->gpl_syms + mod->num_gpl_syms, - mod->gpl_crcs, gpl_only }, + mod->gpl_crcs, + GPL_ONLY, false }, { mod->gpl_future_syms, mod->gpl_future_syms + mod->num_gpl_future_syms, - mod->gpl_future_crcs, warn_if_not_gpl }, + mod->gpl_future_crcs, + WILL_BE_GPL_ONLY, false }, +#ifdef CONFIG_UNUSED_SYMBOLS { mod->unused_syms, mod->unused_syms + mod->num_unused_syms, - mod->unused_crcs, printk_unused_warning }, + mod->unused_crcs, + NOT_GPL_ONLY, true }, { mod->unused_gpl_syms, mod->unused_gpl_syms + mod->num_unused_gpl_syms, - mod->unused_gpl_crcs, gpl_only_unused_warning }, + mod->unused_gpl_crcs, + GPL_ONLY, true }, +#endif }; - ks = search_symarrays(arr, ARRAY_SIZE(arr), - name, gplok, warn, crc); - if (ks) { - if (owner) - *owner = mod; - return ks->value; + if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data)) + return true; + } + return false; +} + +struct find_symbol_arg { + /* Input */ + const char *name; + bool gplok; + bool warn; + + /* Output */ + struct module *owner; + const unsigned long *crc; + unsigned long value; +}; + +static bool find_symbol_in_section(const struct symsearch *syms, + struct module *owner, + unsigned int symnum, void *data) +{ + struct find_symbol_arg *fsa = data; + + if (strcmp(syms->start[symnum].name, fsa->name) != 0) + return false; + + if (!fsa->gplok) { + if (syms->licence == GPL_ONLY) + return false; + if (syms->licence == WILL_BE_GPL_ONLY && fsa->warn) { + printk(KERN_WARNING "Symbol %s is being used " + "by a non-GPL module, which will not " + "be allowed in the future\n", fsa->name); + printk(KERN_WARNING "Please see the file " + "Documentation/feature-removal-schedule.txt " + "in the kernel source tree for more details.\n"); } } +#ifdef CONFIG_UNUSED_SYMBOLS + if (syms->unused && fsa->warn) { + printk(KERN_WARNING "Symbol %s is marked as UNUSED, " + "however this module is using it.\n", fsa->name); + printk(KERN_WARNING + "This symbol will go away in the future.\n"); + printk(KERN_WARNING + "Please evalute if this is the right api to use and if " + "it really is, submit a report the linux kernel " + "mailinglist together with submitting your code for " + "inclusion.\n"); + } +#endif + + fsa->owner = owner; + fsa->crc = symversion(syms->crcs, symnum); + fsa->value = syms->start[symnum].value; + return true; +} + +/* Find a symbol, return value, (optional) crc and (optional) module + * which owns it */ +static unsigned long find_symbol(const char *name, + struct module **owner, + const unsigned long **crc, + bool gplok, + bool warn) +{ + struct find_symbol_arg fsa; + + fsa.name = name; + fsa.gplok = gplok; + fsa.warn = warn; + + if (each_symbol(find_symbol_in_section, &fsa)) { + if (owner) + *owner = fsa.owner; + if (crc) + *crc = fsa.crc; + return fsa.value; + } + DEBUGP("Failed to find symbol %s\n", name); return -ENOENT; } +/* lookup symbol in given range of kernel_symbols */ +static const struct kernel_symbol *lookup_symbol(const char *name, + const struct kernel_symbol *start, + const struct kernel_symbol *stop) +{ + const struct kernel_symbol *ks = start; + for (; ks < stop; ks++) + if (strcmp(ks->name, name) == 0) + return ks; + return NULL; +} + /* Search for module by name: must hold module_mutex. */ static struct module *find_module(const char *name) { @@ -639,8 +674,8 @@ static int __try_stop_module(void *_sref) { struct stopref *sref = _sref; - /* If it's not unused, quit unless we are told to block. */ - if ((sref->flags & O_NONBLOCK) && module_refcount(sref->mod) != 0) { + /* If it's not unused, quit unless we're forcing. */ + if (module_refcount(sref->mod) != 0) { if (!(*sref->forced = try_force_unload(sref->flags))) return -EWOULDBLOCK; } @@ -652,9 +687,16 @@ static int __try_stop_module(void *_sref) static int try_stop_module(struct module *mod, int flags, int *forced) { - struct stopref sref = { mod, flags, forced }; + if (flags & O_NONBLOCK) { + struct stopref sref = { mod, flags, forced }; - return stop_machine_run(__try_stop_module, &sref, NR_CPUS); + return stop_machine_run(__try_stop_module, &sref, NR_CPUS); + } else { + /* We don't need to stop the machine for this. */ + mod->state = MODULE_STATE_GOING; + synchronize_sched(); + return 0; + } } unsigned int module_refcount(struct module *mod) @@ -1445,8 +1487,10 @@ static int verify_export_symbols(struct module *mod) { mod->syms, mod->num_syms }, { mod->gpl_syms, mod->num_gpl_syms }, { mod->gpl_future_syms, mod->num_gpl_future_syms }, +#ifdef CONFIG_UNUSED_SYMBOLS { mod->unused_syms, mod->num_unused_syms }, { mod->unused_gpl_syms, mod->num_unused_gpl_syms }, +#endif }; for (i = 0; i < ARRAY_SIZE(arr); i++) { @@ -1526,7 +1570,7 @@ static int simplify_symbols(Elf_Shdr *sechdrs, } /* Update size with this section: return offset. */ -static long get_offset(unsigned long *size, Elf_Shdr *sechdr) +static long get_offset(unsigned int *size, Elf_Shdr *sechdr) { long ret; @@ -1738,6 +1782,20 @@ static inline void add_kallsyms(struct module *mod, } #endif /* CONFIG_KALLSYMS */ +static void *module_alloc_update_bounds(unsigned long size) +{ + void *ret = module_alloc(size); + + if (ret) { + /* Update module bounds. */ + if ((unsigned long)ret < module_addr_min) + module_addr_min = (unsigned long)ret; + if ((unsigned long)ret + size > module_addr_max) + module_addr_max = (unsigned long)ret + size; + } + return ret; +} + /* Allocate and load the module: note that size of section 0 is always zero, and we rely on this for optional sections. */ static struct module *load_module(void __user *umod, @@ -1764,10 +1822,12 @@ static struct module *load_module(void __user *umod, unsigned int gplfutureindex; unsigned int gplfuturecrcindex; unsigned int unwindex = 0; +#ifdef CONFIG_UNUSED_SYMBOLS unsigned int unusedindex; unsigned int unusedcrcindex; unsigned int unusedgplindex; unsigned int unusedgplcrcindex; +#endif unsigned int markersindex; unsigned int markersstringsindex; struct module *mod; @@ -1850,13 +1910,15 @@ static struct module *load_module(void __user *umod, exportindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab"); gplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl"); gplfutureindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl_future"); - unusedindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused"); - unusedgplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused_gpl"); crcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab"); gplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl"); gplfuturecrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl_future"); +#ifdef CONFIG_UNUSED_SYMBOLS + unusedindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused"); + unusedgplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_unused_gpl"); unusedcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_unused"); unusedgplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_unused_gpl"); +#endif setupindex = find_sec(hdr, sechdrs, secstrings, "__param"); exindex = find_sec(hdr, sechdrs, secstrings, "__ex_table"); obsparmindex = find_sec(hdr, sechdrs, secstrings, "__obsparm"); @@ -1935,7 +1997,7 @@ static struct module *load_module(void __user *umod, layout_sections(mod, hdr, sechdrs, secstrings); /* Do the allocs. */ - ptr = module_alloc(mod->core_size); + ptr = module_alloc_update_bounds(mod->core_size); if (!ptr) { err = -ENOMEM; goto free_percpu; @@ -1943,7 +2005,7 @@ static struct module *load_module(void __user *umod, memset(ptr, 0, mod->core_size); mod->module_core = ptr; - ptr = module_alloc(mod->init_size); + ptr = module_alloc_update_bounds(mod->init_size); if (!ptr && mod->init_size) { err = -ENOMEM; goto free_core; @@ -2018,14 +2080,15 @@ static struct module *load_module(void __user *umod, mod->gpl_crcs = (void *)sechdrs[gplcrcindex].sh_addr; mod->num_gpl_future_syms = sechdrs[gplfutureindex].sh_size / sizeof(*mod->gpl_future_syms); - mod->num_unused_syms = sechdrs[unusedindex].sh_size / - sizeof(*mod->unused_syms); - mod->num_unused_gpl_syms = sechdrs[unusedgplindex].sh_size / - sizeof(*mod->unused_gpl_syms); mod->gpl_future_syms = (void *)sechdrs[gplfutureindex].sh_addr; if (gplfuturecrcindex) mod->gpl_future_crcs = (void *)sechdrs[gplfuturecrcindex].sh_addr; +#ifdef CONFIG_UNUSED_SYMBOLS + mod->num_unused_syms = sechdrs[unusedindex].sh_size / + sizeof(*mod->unused_syms); + mod->num_unused_gpl_syms = sechdrs[unusedgplindex].sh_size / + sizeof(*mod->unused_gpl_syms); mod->unused_syms = (void *)sechdrs[unusedindex].sh_addr; if (unusedcrcindex) mod->unused_crcs = (void *)sechdrs[unusedcrcindex].sh_addr; @@ -2033,13 +2096,17 @@ static struct module *load_module(void __user *umod, if (unusedgplcrcindex) mod->unused_gpl_crcs = (void *)sechdrs[unusedgplcrcindex].sh_addr; +#endif #ifdef CONFIG_MODVERSIONS - if ((mod->num_syms && !crcindex) || - (mod->num_gpl_syms && !gplcrcindex) || - (mod->num_gpl_future_syms && !gplfuturecrcindex) || - (mod->num_unused_syms && !unusedcrcindex) || - (mod->num_unused_gpl_syms && !unusedgplcrcindex)) { + if ((mod->num_syms && !crcindex) + || (mod->num_gpl_syms && !gplcrcindex) + || (mod->num_gpl_future_syms && !gplfuturecrcindex) +#ifdef CONFIG_UNUSED_SYMBOLS + || (mod->num_unused_syms && !unusedcrcindex) + || (mod->num_unused_gpl_syms && !unusedgplcrcindex) +#endif + ) { printk(KERN_WARNING "%s: No versions for exported symbols.\n", mod->name); err = try_to_force_load(mod, "nocrc"); if (err) @@ -2512,7 +2579,7 @@ static int m_show(struct seq_file *m, void *p) struct module *mod = list_entry(p, struct module, list); char buf[8]; - seq_printf(m, "%s %lu", + seq_printf(m, "%s %u", mod->name, mod->init_size + mod->core_size); print_unload_info(m, mod); @@ -2595,6 +2662,9 @@ struct module *__module_text_address(unsigned long addr) { struct module *mod; + if (addr < module_addr_min || addr > module_addr_max) + return NULL; + list_for_each_entry(mod, &modules, list) if (within(addr, mod->module_init, mod->init_text_size) || within(addr, mod->module_core, mod->core_text_size)) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 6b16e16..b859e6b 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -110,7 +110,7 @@ static int min_percpu_pagelist_fract = 8; static int ngroups_max = NGROUPS_MAX; -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES extern char modprobe_path[]; #endif #ifdef CONFIG_CHR_DEV_SG @@ -475,7 +475,7 @@ static struct ctl_table kern_table[] = { .proc_handler = &ftrace_enable_sysctl, }, #endif -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES { .ctl_name = KERN_MODPROBE, .procname = "modprobe", diff --git a/lib/textsearch.c b/lib/textsearch.c index 4b7c607..9fbcb44 100644 --- a/lib/textsearch.c +++ b/lib/textsearch.c @@ -267,7 +267,7 @@ struct ts_config *textsearch_prepare(const char *algo, const void *pattern, return ERR_PTR(-EINVAL); ops = lookup_ts_algo(algo); -#ifdef CONFIG_KMOD +#ifdef CONFIG_MODULES /* * Why not always autoload you may ask. Some users are * in a situation where requesting a module may deadlock, |