extern int clone(int (*proc)(void *), void *sp, int flags, void *data);
extern int sleep(int);
-extern int printf(char *fmt, ...);
+extern int printf(const char *fmt, ...);
extern char *strerror(int errnum);
extern char *ptsname(int __fd);
extern int munmap(void *, int);
extern int pipe(int *);
extern int sched_yield(void);
extern int ptrace(int op, int pid, long addr, long data);
+
#endif
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
int stack_order);
extern int helper_wait(int pid);
-#endif
+/* umid.c */
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+extern int umid_file_name(char *name, char *buf, int len);
+extern int set_umid(char *name, int (*printer)(const char *fmt, ...));
+extern char *get_umid(int only_if_set);
+
+#endif
init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \
process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \
signal_kern.o signal_user.o smp.o syscall_kern.o sysrq.o time.o \
- time_kern.o tlb.o trap_kern.o trap_user.o uaccess.o um_arch.o \
- umid.o user_util.o
+ time_kern.o tlb.o trap_kern.o trap_user.o uaccess.o um_arch.o umid.o \
+ user_util.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
user-objs-$(CONFIG_TTY_LOG) += tty_log.o
-USER_OBJS := $(user-objs-y) config.o time.o tty_log.o umid.o user_util.o
+USER_OBJS := $(user-objs-y) config.o time.o tty_log.o user_util.o
include arch/um/scripts/Makefile.rules
return(stack != (unsigned long) current_thread);
}
-extern void remove_umid_dir(void);
-
-__uml_exitcall(remove_umid_dir);
-
extern exitcall_t __uml_exitcall_begin, __uml_exitcall_end;
void do_uml_exitcalls(void)
* Licensed under the GPL
*/
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <dirent.h>
-#include <signal.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-#include "user.h"
-#include "umid.h"
+#include "linux/stddef.h"
+#include "linux/kernel.h"
+#include "asm/errno.h"
#include "init.h"
#include "os.h"
-#include "user_util.h"
-#include "choose-mode.h"
+#include "kern.h"
-#define UMID_LEN 64
-#define UML_DIR "~/.uml/"
-
-/* Changed by set_umid and make_umid, which are run early in boot */
-static char umid[UMID_LEN] = { 0 };
-
-/* Changed by set_uml_dir and make_uml_dir, which are run early in boot */
-static char *uml_dir = UML_DIR;
-
-/* Changed by set_umid */
-static int umid_is_random = 1;
+/* Changed by set_umid_arg and umid_file_name */
+int umid_is_random = 0;
static int umid_inited = 0;
-/* Have we created the files? Should we remove them? */
-static int umid_owned = 0;
-static int make_umid(int (*printer)(const char *fmt, ...));
-
-static int __init set_umid(char *name, int is_random,
- int (*printer)(const char *fmt, ...))
+static int __init set_umid_arg(char *name, int *add)
{
- if(umid_inited){
- (*printer)("Unique machine name can't be set twice\n");
- return(-1);
- }
+ int err;
- if(strlen(name) > UMID_LEN - 1)
- (*printer)("Unique machine name is being truncated to %d "
- "characters\n", UMID_LEN);
- strlcpy(umid, name, sizeof(umid));
+ if(umid_inited)
+ return 0;
- umid_is_random = is_random;
- umid_inited = 1;
- return 0;
-}
-
-static int __init set_umid_arg(char *name, int *add)
-{
*add = 0;
- return(set_umid(name, 0, printf));
+ err = set_umid(name, printf);
+ if(err == -EEXIST){
+ printf("umid '%s' already in use\n", name);
+ umid_is_random = 1;
+ }
+ else if(!err)
+ umid_inited = 1;
+
+ return 0;
}
__uml_setup("umid=", set_umid_arg,
" is used for naming the pid file and management console socket.\n\n"
);
-int __init umid_file_name(char *name, char *buf, int len)
-{
- int n;
-
- if(!umid_inited && make_umid(printk)) return(-1);
-
- n = strlen(uml_dir) + strlen(umid) + strlen(name) + 1;
- if(n > len){
- printk("umid_file_name : buffer too short\n");
- return(-1);
- }
-
- sprintf(buf, "%s%s/%s", uml_dir, umid, name);
- return(0);
-}
-
-extern int tracing_pid;
-
-static void __init create_pid_file(void)
-{
- char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
- char pid[sizeof("nnnnn\0")];
- int fd, n;
-
- if(umid_file_name("pid", file, sizeof(file)))
- return;
-
- fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))),
- 0644);
- if(fd < 0){
- printf("Open of machine pid file \"%s\" failed: %s\n",
- file, strerror(-fd));
- return;
- }
-
- sprintf(pid, "%d\n", os_getpid());
- n = os_write_file(fd, pid, strlen(pid));
- if(n != strlen(pid))
- printf("Write of pid file failed - err = %d\n", -n);
- os_close_file(fd);
-}
-
-static int actually_do_remove(char *dir)
-{
- DIR *directory;
- struct dirent *ent;
- int len;
- char file[256];
-
- directory = opendir(dir);
- if(directory == NULL){
- printk("actually_do_remove : couldn't open directory '%s', "
- "errno = %d\n", dir, errno);
- return(1);
- }
- while((ent = readdir(directory)) != NULL){
- if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
- continue;
- len = strlen(dir) + sizeof("/") + strlen(ent->d_name) + 1;
- if(len > sizeof(file)){
- printk("Not deleting '%s' from '%s' - name too long\n",
- ent->d_name, dir);
- continue;
- }
- sprintf(file, "%s/%s", dir, ent->d_name);
- if(unlink(file) < 0){
- printk("actually_do_remove : couldn't remove '%s' "
- "from '%s', errno = %d\n", ent->d_name, dir,
- errno);
- return(1);
- }
- }
- if(rmdir(dir) < 0){
- printk("actually_do_remove : couldn't rmdir '%s', "
- "errno = %d\n", dir, errno);
- return(1);
- }
- return(0);
-}
-
-void remove_umid_dir(void)
-{
- char dir[strlen(uml_dir) + UMID_LEN + 1];
- if (!umid_owned)
- return;
-
- sprintf(dir, "%s%s", uml_dir, umid);
- actually_do_remove(dir);
-}
-
-char *get_umid(int only_if_set)
-{
- if(only_if_set && umid_is_random)
- return NULL;
- return umid;
-}
-
-static int not_dead_yet(char *dir)
-{
- char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
- char pid[sizeof("nnnnn\0")], *end;
- int dead, fd, p, n;
-
- sprintf(file, "%s/pid", dir);
- dead = 0;
- fd = os_open_file(file, of_read(OPENFLAGS()), 0);
- if(fd < 0){
- if(fd != -ENOENT){
- printk("not_dead_yet : couldn't open pid file '%s', "
- "err = %d\n", file, -fd);
- return(1);
- }
- dead = 1;
- }
- if(fd > 0){
- n = os_read_file(fd, pid, sizeof(pid));
- if(n < 0){
- printk("not_dead_yet : couldn't read pid file '%s', "
- "err = %d\n", file, -n);
- return(1);
- }
- p = strtoul(pid, &end, 0);
- if(end == pid){
- printk("not_dead_yet : couldn't parse pid file '%s', "
- "errno = %d\n", file, errno);
- dead = 1;
- }
- if(((kill(p, 0) < 0) && (errno == ESRCH)) ||
- (p == CHOOSE_MODE(tracing_pid, os_getpid())))
- dead = 1;
- }
- if(!dead)
- return(1);
- return(actually_do_remove(dir));
-}
-
-static int __init set_uml_dir(char *name, int *add)
-{
- if((strlen(name) > 0) && (name[strlen(name) - 1] != '/')){
- uml_dir = malloc(strlen(name) + 2);
- if(uml_dir == NULL){
- printf("Failed to malloc uml_dir - error = %d\n",
- errno);
- uml_dir = name;
- /* Return 0 here because do_initcalls doesn't look at
- * the return value.
- */
- return(0);
- }
- sprintf(uml_dir, "%s/", name);
- }
- else uml_dir = name;
- return(0);
-}
-
-static int __init make_uml_dir(void)
-{
- char dir[MAXPATHLEN + 1] = { '\0' };
- int len;
-
- if(*uml_dir == '~'){
- char *home = getenv("HOME");
-
- if(home == NULL){
- printf("make_uml_dir : no value in environment for "
- "$HOME\n");
- exit(1);
- }
- strlcpy(dir, home, sizeof(dir));
- uml_dir++;
- }
- strlcat(dir, uml_dir, sizeof(dir));
- len = strlen(dir);
- if (len > 0 && dir[len - 1] != '/')
- strlcat(dir, "/", sizeof(dir));
-
- uml_dir = malloc(strlen(dir) + 1);
- if (uml_dir == NULL) {
- printf("make_uml_dir : malloc failed, errno = %d\n", errno);
- exit(1);
- }
- strcpy(uml_dir, dir);
-
- if((mkdir(uml_dir, 0777) < 0) && (errno != EEXIST)){
- printf("Failed to mkdir %s: %s\n", uml_dir, strerror(errno));
- return(-1);
- }
- return 0;
-}
-
-static int __init make_umid(int (*printer)(const char *fmt, ...))
-{
- int fd, err;
- char tmp[strlen(uml_dir) + UMID_LEN + 1];
-
- strlcpy(tmp, uml_dir, sizeof(tmp));
-
- if(!umid_inited){
- strcat(tmp, "XXXXXX");
- fd = mkstemp(tmp);
- if(fd < 0){
- (*printer)("make_umid - mkstemp(%s) failed: %s\n",
- tmp,strerror(errno));
- return(1);
- }
-
- os_close_file(fd);
- /* There's a nice tiny little race between this unlink and
- * the mkdir below. It'd be nice if there were a mkstemp
- * for directories.
- */
- unlink(tmp);
- set_umid(&tmp[strlen(uml_dir)], 1, printer);
- }
-
- sprintf(tmp, "%s%s", uml_dir, umid);
-
- err = mkdir(tmp, 0777);
- if(err < 0){
- if(errno == EEXIST){
- if(not_dead_yet(tmp)){
- (*printer)("umid '%s' is in use\n", umid);
- umid_owned = 0;
- return(-1);
- }
- err = mkdir(tmp, 0777);
- }
- }
- if(err < 0){
- (*printer)("Failed to create %s - errno = %d\n", umid, errno);
- return(-1);
- }
-
- umid_owned = 1;
- return 0;
-}
-
-__uml_setup("uml_dir=", set_uml_dir,
-"uml_dir=<directory>\n"
-" The location to place the pid and umid files.\n\n"
-);
-
-static int __init make_umid_setup(void)
-{
- /* one function with the ordering we need ... */
- make_uml_dir();
- make_umid(printf);
- create_pid_file();
- return 0;
-}
-__uml_postsetup(make_umid_setup);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
#
obj-y = aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
- start_up.o time.o tt.o tty.o uaccess.o user_syms.o drivers/ \
+ start_up.o time.o tt.o tty.o uaccess.o umid.o user_syms.o drivers/ \
sys-$(SUBARCH)/
USER_OBJS := aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
- start_up.o time.o tt.o tty.o uaccess.o
+ start_up.o time.o tt.o tty.o uaccess.o umid.o
elf_aux.o: $(ARCH_DIR)/kernel-offsets.h
CFLAGS_elf_aux.o += -I$(objtree)/arch/um
--- /dev/null
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include "init.h"
+#include "os.h"
+#include "user.h"
+#include "mode.h"
+
+#define UML_DIR "~/.uml/"
+
+#define UMID_LEN 64
+
+/* Changed by set_umid, which is run early in boot */
+char umid[UMID_LEN] = { 0 };
+
+/* Changed by set_uml_dir and make_uml_dir, which are run early in boot */
+static char *uml_dir = UML_DIR;
+
+static int __init make_uml_dir(void)
+{
+ char dir[512] = { '\0' };
+ int len;
+
+ if(*uml_dir == '~'){
+ char *home = getenv("HOME");
+
+ if(home == NULL){
+ printf("make_uml_dir : no value in environment for "
+ "$HOME\n");
+ exit(1);
+ }
+ strlcpy(dir, home, sizeof(dir));
+ uml_dir++;
+ }
+ strlcat(dir, uml_dir, sizeof(dir));
+ len = strlen(dir);
+ if (len > 0 && dir[len - 1] != '/')
+ strlcat(dir, "/", sizeof(dir));
+
+ uml_dir = malloc(strlen(dir) + 1);
+ if (uml_dir == NULL) {
+ printf("make_uml_dir : malloc failed, errno = %d\n", errno);
+ exit(1);
+ }
+ strcpy(uml_dir, dir);
+
+ if((mkdir(uml_dir, 0777) < 0) && (errno != EEXIST)){
+ printf("Failed to mkdir '%s': %s\n", uml_dir, strerror(errno));
+ return(-1);
+ }
+ return 0;
+}
+
+static int actually_do_remove(char *dir)
+{
+ DIR *directory;
+ struct dirent *ent;
+ int len;
+ char file[256];
+
+ directory = opendir(dir);
+ if(directory == NULL){
+ printk("actually_do_remove : couldn't open directory '%s', "
+ "errno = %d\n", dir, errno);
+ return(1);
+ }
+ while((ent = readdir(directory)) != NULL){
+ if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
+ continue;
+ len = strlen(dir) + sizeof("/") + strlen(ent->d_name) + 1;
+ if(len > sizeof(file)){
+ printk("Not deleting '%s' from '%s' - name too long\n",
+ ent->d_name, dir);
+ continue;
+ }
+ sprintf(file, "%s/%s", dir, ent->d_name);
+ if(unlink(file) < 0){
+ printk("actually_do_remove : couldn't remove '%s' "
+ "from '%s', errno = %d\n", ent->d_name, dir,
+ errno);
+ return(1);
+ }
+ }
+ if(rmdir(dir) < 0){
+ printk("actually_do_remove : couldn't rmdir '%s', "
+ "errno = %d\n", dir, errno);
+ return(1);
+ }
+ return(0);
+}
+
+extern int tracing_pid;
+
+static int not_dead_yet(char *dir)
+{
+ char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
+ char pid[sizeof("nnnnn\0")], *end;
+ int dead, fd, p, n;
+
+ sprintf(file, "%s/pid", dir);
+ dead = 0;
+ fd = os_open_file(file, of_read(OPENFLAGS()), 0);
+ if(fd < 0){
+ if(fd != -ENOENT){
+ printk("not_dead_yet : couldn't open pid file '%s', "
+ "err = %d\n", file, -fd);
+ return(1);
+ }
+ dead = 1;
+ }
+ if(fd > 0){
+ n = os_read_file(fd, pid, sizeof(pid));
+ if(n < 0){
+ printk("not_dead_yet : couldn't read pid file '%s', "
+ "err = %d\n", file, -n);
+ return(1);
+ }
+ p = strtoul(pid, &end, 0);
+ if(end == pid){
+ printk("not_dead_yet : couldn't parse pid file '%s', "
+ "errno = %d\n", file, errno);
+ dead = 1;
+ }
+ if(((kill(p, 0) < 0) && (errno == ESRCH)) ||
+ (p == CHOOSE_MODE(tracing_pid, os_getpid())))
+ dead = 1;
+ }
+ if(!dead)
+ return(1);
+ return(actually_do_remove(dir));
+}
+
+static void __init create_pid_file(void)
+{
+ char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
+ char pid[sizeof("nnnnn\0")];
+ int fd, n;
+
+ if(umid_file_name("pid", file, sizeof(file)))
+ return;
+
+ fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))),
+ 0644);
+ if(fd < 0){
+ printf("Open of machine pid file \"%s\" failed: %s\n",
+ file, strerror(-fd));
+ return;
+ }
+
+ sprintf(pid, "%d\n", os_getpid());
+ n = os_write_file(fd, pid, strlen(pid));
+ if(n != strlen(pid))
+ printf("Write of pid file failed - err = %d\n", -n);
+ os_close_file(fd);
+}
+
+int __init set_umid(char *name, int (*printer)(const char *fmt, ...))
+{
+ if(strlen(name) > UMID_LEN - 1)
+ (*printer)("Unique machine name is being truncated to %d "
+ "characters\n", UMID_LEN);
+ strlcpy(umid, name, sizeof(umid));
+
+ return 0;
+}
+
+static int umid_setup = 0;
+
+int __init make_umid(int (*printer)(const char *fmt, ...))
+{
+ int fd, err;
+ char tmp[256];
+
+ make_uml_dir();
+
+ if(*umid == '\0'){
+ strlcpy(tmp, uml_dir, sizeof(tmp));
+ strcat(tmp, "XXXXXX");
+ fd = mkstemp(tmp);
+ if(fd < 0){
+ (*printer)("make_umid - mkstemp(%s) failed: %s\n",
+ tmp,strerror(errno));
+ return(1);
+ }
+
+ os_close_file(fd);
+ /* There's a nice tiny little race between this unlink and
+ * the mkdir below. It'd be nice if there were a mkstemp
+ * for directories.
+ */
+ unlink(tmp);
+ set_umid(&tmp[strlen(uml_dir)], printer);
+ }
+
+ sprintf(tmp, "%s%s", uml_dir, umid);
+ err = mkdir(tmp, 0777);
+ if(err < 0){
+ if(errno == EEXIST){
+ if(not_dead_yet(tmp))
+ return -EEXIST;
+ err = mkdir(tmp, 0777);
+ }
+ }
+ if(err < 0){
+ (*printer)("Failed to create %s - errno = %d\n", umid, errno);
+ return(-1);
+ }
+
+ umid_setup = 1;
+
+ create_pid_file();
+
+ return 0;
+}
+
+static int __init make_umid_init(void)
+{
+ make_umid(printk);
+
+ return(0);
+}
+
+__initcall(make_umid_init);
+
+int __init umid_file_name(char *name, char *buf, int len)
+{
+ int n, err;
+
+ if(!umid_setup){
+ err = make_umid(printk);
+ if(err)
+ return err;
+ }
+
+ n = strlen(uml_dir) + strlen(umid) + strlen("/") + strlen(name) + 1;
+ if(n > len){
+ printk("umid_file_name : buffer too short\n");
+ return(-1);
+ }
+
+ sprintf(buf, "%s%s/%s", uml_dir, umid, name);
+ return(0);
+}
+
+extern int umid_is_random;
+
+char *get_umid(int only_if_set)
+{
+ if(only_if_set && umid_is_random)
+ return NULL;
+ return umid;
+}
+
+static int __init set_uml_dir(char *name, int *add)
+{
+ if((strlen(name) > 0) && (name[strlen(name) - 1] != '/')){
+ uml_dir = malloc(strlen(name) + 2);
+ if(uml_dir == NULL){
+ printf("Failed to malloc uml_dir - error = %d\n",
+ errno);
+ uml_dir = name;
+ /* Return 0 here because do_initcalls doesn't look at
+ * the return value.
+ */
+ return(0);
+ }
+ sprintf(uml_dir, "%s/", name);
+ }
+ else uml_dir = name;
+ return(0);
+}
+
+__uml_setup("uml_dir=", set_uml_dir,
+"uml_dir=<directory>\n"
+" The location to place the pid and umid files.\n\n"
+);
+
+static void remove_umid_dir(void)
+{
+ char dir[strlen(uml_dir) + UMID_LEN + 1];
+
+ sprintf(dir, "%s%s", uml_dir, umid);
+ actually_do_remove(dir);
+}
+
+__uml_exitcall(remove_umid_dir);
projects / linux-2.6 / commitdiff