include/linux/kernel.h

/* */
   1 #ifndef _LINUX_KERNEL_H
   2 #define _LINUX_KERNEL_H
   3 
   4 /*
   5  * 'kernel.h' contains some often-used function prototypes etc
   6  */
   7 
   8 #ifdef __KERNEL__
   9 
  10 #include <linux/linkage.h>
  11 
  12 #define INT_MAX         ((int)(~0U>>1))
  13 #define UINT_MAX        (~0U)
  14 #define LONG_MAX        ((long)(~0UL>>1))
  15 #define ULONG_MAX       (~0UL)
  16 
  17 #define VERIFY_READ 0
  18 #define VERIFY_WRITE 1
  19 
  20 int verify_area(int type, void * addr, unsigned long count);
  21 
  22 #define KERN_EMERG      "<0>"   /* system is unusable                   */
  23 #define KERN_ALERT      "<1>"   /* action must be taken immediately     */
  24 #define KERN_CRIT       "<2>"   /* critical conditions                  */
  25 #define KERN_ERR        "<3>"   /* error conditions                     */
  26 #define KERN_WARNING    "<4>"   /* warning conditions                   */
  27 #define KERN_NOTICE     "<5>"   /* normal but significant condition     */
  28 #define KERN_INFO       "<6>"   /* informational                        */
  29 #define KERN_DEBUG      "<7>"   /* debug-level messages                 */
  30 
  31 #if __GNUC__ < 2 || __GNUC_MINOR__ < 5
  32 # define NORET_TYPE    __volatile__
  33 # define ATTRIB_NORET  /**/
  34 # define NORET_AND     /**/
  35 #else
  36 # define NORET_TYPE    /**/
  37 # define ATTRIB_NORET  __attribute__((noreturn))
  38 # define NORET_AND     noreturn,
  39 #endif
  40 
  41 extern void math_error(void);
  42 NORET_TYPE void panic(const char * fmt, ...)
  43         __attribute__ ((NORET_AND format (printf, 1, 2)));
  44 NORET_TYPE void do_exit(long error_code)
  45         ATTRIB_NORET;
  46 unsigned long simple_strtoul(const char *,char **,unsigned int);
  47 int sprintf(char * buf, const char * fmt, ...);
  48 
  49 int session_of_pgrp(int pgrp);
  50 
  51 int kill_proc(int pid, int sig, int priv);
  52 int kill_pg(int pgrp, int sig, int priv);
  53 int kill_sl(int sess, int sig, int priv);
  54 
  55 asmlinkage int printk(const char * fmt, ...)
  56         __attribute__ ((format (printf, 1, 2)));
  57 
  58 /*
  59  * This is defined as a macro, but at some point this might become a
  60  * real subroutine that sets a flag if it returns true (to do
  61  * BSD-style accounting where the process is flagged if it uses root
  62  * privs).  The implication of this is that you should do normal
  63  * permissions checks first, and check suser() last.
  64  */
  65 #define suser() (current->euid == 0)
  66 
  67 #endif /* __KERNEL__ */
  68 
  69 #define SI_LOAD_SHIFT   16
  70 struct sysinfo {
  71         long uptime;                    /* Seconds since boot */
  72         unsigned long loads[3];         /* 1, 5, and 15 minute load averages */
  73         unsigned long totalram;         /* Total usable main memory size */
  74         unsigned long freeram;          /* Available memory size */
  75         unsigned long sharedram;        /* Amount of shared memory */
  76         unsigned long bufferram;        /* Memory used by buffers */
  77         unsigned long totalswap;        /* Total swap space size */
  78         unsigned long freeswap;         /* swap space still available */
  79         unsigned short procs;           /* Number of current processes */
  80         char _f[22];                    /* Pads structure to 64 bytes */
  81 };
  82 
  83 #endif
/* */
root/include/linux/kernel.h

INCLUDED FROM
