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Linux Syste m Call Table

2024-09-22 10:11:21   218人阅读

Linux System Call Table(2.2)

%eaxNameSource%ebx%ecx%edx%esx%edi
1 sys_exit kernel/exit.c int - - - -
2 sys_fork arch/i386/kernel/process.c struct pt_regs - - - -
3 sys_read fs/read_write.c unsigned int char * size_t - -
4 sys_write fs/read_write.c unsigned int const char * size_t - -
5 sys_open fs/open.c const char * int int - -
6 sys_close fs/open.c unsigned int - - - -
7 sys_waitpid kernel/exit.c pid_t unsigned int * int - -
8 sys_creat fs/open.c const char * int - - -
9 sys_link fs/namei.c const char * const char * - - -
10 sys_unlink fs/namei.c const char * - - - -
11 sys_execve arch/i386/kernel/process.c struct pt_regs - - - -
12 sys_chdir fs/open.c const char * - - - -
13 sys_time kernel/time.c int * - - - -
14 sys_mknod fs/namei.c const char * int dev_t - -
15 sys_chmod fs/open.c const char * mode_t - - -
16 sys_lchown fs/open.c const char * uid_t gid_t - -
18 sys_stat fs/stat.c char * struct __old_kernel_stat * - - -
19 sys_lseek fs/read_write.c unsigned int off_t unsigned int - -
20 sys_getpid kernel/sched.c - - - - -
21 sys_mount fs/super.c char * char * char * - -
22 sys_oldumount fs/super.c char * - - - -
23 sys_setuid kernel/sys.c uid_t - - - -
24 sys_getuid kernel/sched.c - - - - -
25 sys_stime kernel/time.c int * - - - -
26 sys_ptrace arch/i386/kernel/ptrace.c long long long long -
27 sys_alarm kernel/sched.c unsigned int - - - -
28 sys_fstat fs/stat.c unsigned int struct __old_kernel_stat * - - -
29 sys_pause arch/i386/kernel/sys_i386.c - - - - -
30 sys_utime fs/open.c char * struct utimbuf * - - -
33 sys_access fs/open.c const char * int - - -
34 sys_nice kernel/sched.c int - - - -
36 sys_sync fs/buffer.c - - - - -
37 sys_kill kernel/signal.c int int - - -
38 sys_rename fs/namei.c const char * const char * - - -
39 sys_mkdir fs/namei.c const char * int - - -
40 sys_rmdir fs/namei.c const char * - - - -
41 sys_dup fs/fcntl.c unsigned int - - - -
42 sys_pipe arch/i386/kernel/sys_i386.c unsigned long * - - - -
43 sys_times kernel/sys.c struct tms * - - - -
45 sys_brk mm/mmap.c unsigned long - - - -
46 sys_setgid kernel/sys.c gid_t - - - -
47 sys_getgid kernel/sched.c - - - - -
48 sys_signal kernel/signal.c int __sighandler_t - - -
49 sys_geteuid kernel/sched.c - - - - -
50 sys_getegid kernel/sched.c - - - - -
51 sys_acct kernel/acct.c const char * - - - -
52 sys_umount fs/super.c char * int - - -
54 sys_ioctl fs/ioctl.c unsigned int unsigned int unsigned long - -
55 sys_fcntl fs/fcntl.c unsigned int unsigned int unsigned long - -
57 sys_setpgid kernel/sys.c pid_t pid_t - - -
59 sys_olduname arch/i386/kernel/sys_i386.c struct oldold_utsname * - - - -
60 sys_umask kernel/sys.c int - - - -
61 sys_chroot fs/open.c const char * - - - -
62 sys_ustat fs/super.c dev_t struct ustat * - - -
63 sys_dup2 fs/fcntl.c unsigned int unsigned int - - -
64 sys_getppid kernel/sched.c - - - - -
65 sys_getpgrp kernel/sys.c - - - - -
66 sys_setsid kernel/sys.c - - - - -
67 sys_sigaction arch/i386/kernel/signal.c int const struct old_sigaction * struct old_sigaction * - -
68 sys_sgetmask kernel/signal.c - - - - -
69 sys_ssetmask kernel/signal.c int - - - -
70 sys_setreuid kernel/sys.c uid_t uid_t - - -
71 sys_setregid kernel/sys.c gid_t gid_t - - -
72 sys_sigsuspend arch/i386/kernel/signal.c int int old_sigset_t - -
73 sys_sigpending kernel/signal.c old_sigset_t * - - - -
74 sys_sethostname kernel/sys.c char * int - - -
75 sys_setrlimit kernel/sys.c unsigned int struct rlimit * - - -
76 sys_getrlimit kernel/sys.c unsigned int struct rlimit * - - -
77 sys_getrusage kernel/sys.c int struct rusage * - - -
78 sys_gettimeofday kernel/time.c struct timeval * struct timezone * - - -
79 sys_settimeofday kernel/time.c struct timeval * struct timezone * - - -
80 sys_getgroups kernel/sys.c int gid_t * - - -
81 sys_setgroups kernel/sys.c int gid_t * - - -
82 old_select arch/i386/kernel/sys_i386.c struct sel_arg_struct * - - - -
83 sys_symlink fs/namei.c const char * const char * - - -
84 sys_lstat fs/stat.c char * struct __old_kernel_stat * - - -
85 sys_readlink fs/stat.c const char * char * int - -
86 sys_uselib fs/exec.c const char * - - - -
87 sys_swapon mm/swapfile.c const char * int - - -
88 sys_reboot kernel/sys.c int int int void * -
89 old_readdir fs/readdir.c unsigned int void * unsigned int - -
90 old_mmap arch/i386/kernel/sys_i386.c struct mmap_arg_struct * - - - -
91 sys_munmap mm/mmap.c unsigned long size_t - - -
92 sys_truncate fs/open.c const char * unsigned long - - -
93 sys_ftruncate fs/open.c unsigned int unsigned long - - -
94 sys_fchmod fs/open.c unsigned int mode_t - - -
95 sys_fchown fs/open.c unsigned int uid_t gid_t - -
96 sys_getpriority kernel/sys.c int int - - -
97 sys_setpriority kernel/sys.c int int int - -
99 sys_statfs fs/open.c const char * struct statfs * - - -
100 sys_fstatfs fs/open.c unsigned int struct statfs * - - -
101 sys_ioperm arch/i386/kernel/ioport.c unsigned long unsigned long int - -
102 sys_socketcall net/socket.c int unsigned long * - - -
103 sys_syslog kernel/printk.c int char * int - -
104 sys_setitimer kernel/itimer.c int struct itimerval * struct itimerval * - -
105 sys_getitimer kernel/itimer.c int struct itimerval * - - -
106 sys_newstat fs/stat.c char * struct stat * - - -
107 sys_newlstat fs/stat.c char * struct stat * - - -
108 sys_newfstat fs/stat.c unsigned int struct stat * - - -
109 sys_uname arch/i386/kernel/sys_i386.c struct old_utsname * - - - -
110 sys_iopl arch/i386/kernel/ioport.c unsigned long - - - -
111 sys_vhangup fs/open.c - - - - -
112 sys_idle arch/i386/kernel/process.c - - - - -
113 sys_vm86old arch/i386/kernel/vm86.c unsigned long struct vm86plus_struct * - - -
114 sys_wait4 kernel/exit.c pid_t unsigned long * int options struct rusage * -
115 sys_swapoff mm/swapfile.c const char * - - - -
116 sys_sysinfo kernel/info.c struct sysinfo * - - - -
117 sys_ipc(*Note) arch/i386/kernel/sys_i386.c uint int int int void *
118 sys_fsync fs/buffer.c unsigned int - - - -
119 sys_sigreturn arch/i386/kernel/signal.c unsigned long - - - -
120 sys_clone arch/i386/kernel/process.c struct pt_regs - - - -
121 sys_setdomainname kernel/sys.c char * int - - -
122 sys_newuname kernel/sys.c struct new_utsname * - - - -
123 sys_modify_ldt arch/i386/kernel/ldt.c int void * unsigned long - -
124 sys_adjtimex kernel/time.c struct timex * - - - -
125 sys_mprotect mm/mprotect.c unsigned long size_t unsigned long - -
126 sys_sigprocmask kernel/signal.c int old_sigset_t * old_sigset_t * - -
127 sys_create_module kernel/module.c const char * size_t - - -
128 sys_init_module kernel/module.c const char * struct module * - - -
129 sys_delete_module kernel/module.c const char * - - - -
130 sys_get_kernel_syms kernel/module.c struct kernel_sym * - - - -
131 sys_quotactl fs/dquot.c int const char * int caddr_t -
132 sys_getpgid kernel/sys.c pid_t - - - -
133 sys_fchdir fs/open.c unsigned int - - - -
134 sys_bdflush fs/buffer.c int long - - -
135 sys_sysfs fs/super.c int unsigned long unsigned long - -
136 sys_personality kernel/exec_domain.c unsigned long - - - -
138 sys_setfsuid kernel/sys.c uid_t - - - -
139 sys_setfsgid kernel/sys.c gid_t - - - -
140 sys_llseek fs/read_write.c unsigned int unsigned long unsigned long loff_t * unsigned int
141 sys_getdents fs/readdir.c unsigned int void * unsigned int - -
142 sys_select fs/select.c int fd_set * fd_set * fd_set * struct timeval *
143 sys_flock fs/locks.c unsigned int unsigned int - - -
144 sys_msync mm/filemap.c unsigned long size_t int - -
145 sys_readv fs/read_write.c unsigned long const struct iovec * unsigned long - -
146 sys_writev fs/read_write.c unsigned long const struct iovec * unsigned long - -
147 sys_getsid kernel/sys.c pid_t - - - -
148 sys_fdatasync fs/buffer.c unsigned int - - - -
149 sys_sysctl kernel/sysctl.c struct __sysctl_args * - - - -
150 sys_mlock mm/mlock.c unsigned long size_t - - -
151 sys_munlock mm/mlock.c unsigned long size_t - - -
152 sys_mlockall mm/mlock.c int - - - -
153 sys_munlockall mm/mlock.c - - - - -
154 sys_sched_setparam kernel/sched.c pid_t struct sched_param * - - -
155 sys_sched_getparam kernel/sched.c pid_t struct sched_param * - - -
156 sys_sched_setscheduler kernel/sched.c pid_t int struct sched_param * - -
157 sys_sched_getscheduler kernel/sched.c pid_t - - - -
158 sys_sched_yield kernel/sched.c - - - - -
159 sys_sched_get_priority_max kernel/sched.c int - - - -
160 sys_sched_get_priority_min kernel/sched.c int - - - -
161 sys_sched_rr_get_interval kernel/sched.c pid_t struct timespec * - - -
162 sys_nanosleep kernel/sched.c struct timespec * struct timespec * - - -
163 sys_mremap mm/mremap.c unsigned long unsigned long unsigned long unsigned long -
164 sys_setresuid kernel/sys.c uid_t uid_t uid_t - -
165 sys_getresuid kernel/sys.c uid_t * uid_t * uid_t * - -
166 sys_vm86 arch/i386/kernel/vm86.c struct vm86_struct * - - - -
167 sys_query_module kernel/module.c const char * int char * size_t size_t *
168 sys_poll fs/select.c struct pollfd * unsigned int long - -
169 sys_nfsservctl fs/filesystems.c int void * void * - -
170 sys_setresgid kernel/sys.c gid_t gid_t gid_t - -
171 sys_getresgid kernel/sys.c gid_t * gid_t * gid_t * - -
172 sys_prctl kernel/sys.c int unsigned long unsigned long unsigned long unsigned long
173 sys_rt_sigreturn arch/i386/kernel/signal.c unsigned long - - - -
174 sys_rt_sigaction kernel/signal.c int const struct sigaction * struct sigaction * size_t -
175 sys_rt_sigprocmask kernel/signal.c int sigset_t * sigset_t * size_t -
176 sys_rt_sigpending kernel/signal.c sigset_t * size_t - - -
177 sys_rt_sigtimedwait kernel/signal.c const sigset_t * siginfo_t * const struct timespec * size_t -
178 sys_rt_sigqueueinfo kernel/signal.c int int siginfo_t * - -
179 sys_rt_sigsuspend arch/i386/kernel/signal.c sigset_t * size_t - - -
180 sys_pread fs/read_write.c unsigned int char * size_t loff_t -
181 sys_pwrite fs/read_write.c unsigned int const char * size_t loff_t -
182 sys_chown fs/open.c const char * uid_t gid_t - -
183 sys_getcwd fs/dcache.c char * unsigned long - - -
184 sys_capget kernel/capability.c cap_user_header_t cap_user_data_t - - -
185 sys_capset kernel/capability.c cap_user_header_t const cap_user_data_t - - -
186 sys_sigaltstack arch/i386/kernel/signal.c const stack_t * stack_t * - - -
187 sys_sendfile mm/filemap.c int int off_t * size_t -
190 sys_vfork arch/i386/kernel/process.c struct pt_regs - - - -

Note for sys_ipc (117): this syscall takes six arguments, so it can‘t fit into the five registers %ebx - %edi; the last parameter (not shown) is of type ‘long‘. This syscall requires a special call method where a pointer is put in %ebx which points to an array containing the six arguments.

System Call Numbers

For the numbers of the syscalls, look in arch/i386/kernel/entry.S for sys_call_table. The syscall numbers are offsets into that table. Several spots in the table are occupied by the syscallsys_ni_syscall. This is a placeholder that either replaces an obsolete syscall or reserves a spot for future syscalls.

Incidentally, the system calls are called from the function system_call in the same file; in particular, they are called with the assembly instruction ‘call *SYMBOL_NAME(sys_call_table)(,%eax,4)‘. The part ‘*SYMBOL_NAME(sys_call_table)‘ just gets replaced by a symbol name in sys_call_table. SYMBOL_NAME is a macro defined in include/linux/linkage.h, and it just replaces itself with its argument.

Typedefs

Here are the typedef declarations in the prototypes above:

atomic_t include/asm/atomic.h:
#ifdef __SMP__
typedef struct { volatile int counter; } atomic_t;
#else
typedef struct { int counter; } atomic_t;
#endif
caddr_t include/asm/posix_types.h:typedef char * __kernel_caddr_t;
include/linux/types.h:typedef __kernel_caddr_t caddr_t;
cap_user_header_t include/linux/capability.h:
typedef struct __user_cap_header_struct {
     __u32 version;
     int pid;
} *cap_user_header_t;
cap_user_data_t include/linux/capability.h:
typedef struct __user_cap_data_struct {
     __u32 effective;
     __u32 permitted;
     __u32 inheritable;
} *cap_user_data_t;
clock_t include/asm/posix_types.h:typedef long __kernel_clock_t;
include/linux/types.h:typedef __kernel_clock_t clock_t;
dev_t include/asm/posix_types.h:typedef unsigned short __kernel_dev_t;
include/linux/types.h:typedef __kernel_dev_t dev_t;
fd_set include/linux/posix_types.h
#define __FD_SETSIZE 1024
#define __NFDBITS (8 * sizeof(unsigned long))
#define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)
(==> __FDSET_LONGS == 32)

typedef struct {
     unsigned long fds_bits [__FDSET_LONGS];
} __kernel_fd_set;
include/linux/types.h:typedef __kernel_fd_set fd_set;
gid_t include/asm/posix_types.h:typedef unsigned short __kernel_gid_t;
include/linux/types.h:typedef __kernel_gid_t gid_t;
__kernel_daddr_t include/asm/posix_types.h:typedef int __kernel_daddr_t;
__kernel_fsid_t include/asm/posix_types.h:
typedef struct {
     int __val[2];
} __kernel_fsid_t;
__kernel_ino_t include/asm/posix_types.h:typedef unsigned long __kernel_ino_t;
__kernel_size_t include/asm/posix_types.h:typedef unsigned int __kernel_size_t;
loff_t include/asm/posix_types.h:typedef long long __kernel_loff_t;
include/linux/types.h:typedef __kernel_loff_t loff_t;
mode_t include/asm/posix_types.h:typedef unsigned short __kernel_mode_t;
include/linux/types.h:typedef __kernel_mode_t mode_t;
off_t include/asm/posix_types.h:typedef long __kernel_off_t; include/linux/types.h:typedef __kernel_off_t off_t;
old_sigset_t include/asm/signal.h:typedef unsigned long old_sigset_t;
pid_t include/asm/posix_types.h:typedef int __kernel_pid_t;
include/linux/types.h:typedef __kernel_pid_t pid_t;
__sighandler_t include/asm/signal.h:typedef void (*__sighandler_t)(int);
siginfo_t include/asm/siginfo.h:
#define SI_MAX_SIZE 128
#define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)
(==> SI_PAD_SIZE == 29)

typedef struct siginfo {
     int si_signo;
     int si_errno;
     int si_code;

     union {
          int _pad[SI_PAD_SIZE];

          /* kill() */
          struct {
               pid_t _pid; /* sender‘s pid */
               uid_t _uid; /* sender‘s uid */
          } _kill;

          /* POSIX.1b timers */
          struct {
               unsigned int _timer1;
               unsigned int _timer2;
          } _timer;

          /* POSIX.1b signals */
          struct {
               pid_t _pid; /* sender‘s pid */
               uid_t _uid; /* sender‘s uid */
               sigval_t _sigval;
          } _rt;

          /* SIGCHLD */
          struct {
               pid_t _pid; /* which child */
               uid_t _uid; /* sender‘s uid */
               int _status; /* exit code */
               clock_t _utime;
               clock_t _stime;
          } _sigchld;

          /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
          struct {
               void *_addr; /* faulting insn/memory ref. */
          } _sigfault;

          /* SIGPOLL */
          struct {
               int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
               int _fd;
          } _sigpoll;
     } _sifields;
} siginfo_t;
sigset_t include/asm/signal.h:typedef unsigned long sigset_t;
size_t include/asm/posix_types.h:typedef unsigned int __kernel_size_t;
include/linux/types.h:typedef __kernel_size_t size_t;
ssize_t include/asm/posix_types.h:typedef int __kernel_ssize_t;
include/linux/types.h:typedef __kernel_ssize_t ssize_t;
stack_t include/asm/signal.h:
typedef struct sigaltstack {
     void *ss_sp;
     int ss_flags;
     size_t ss_size;
} stack_t;
suseconds_t include/asm/posix_types.h:typedef long __kernel_suseconds_t;
include/linux/types.h:typedef __kernel_suseconds_t suseconds_t;
time_t include/asm/posix_types.h:typedef long __kernel_time_t;
include/linux/types.h:typedef __kernel_time_t time_t;
uid_t include/asm/posix_types.h:typedef unsigned short __kernel_uid_t;
include/linux/types.h:typedef __kernel_uid_t uid_t;
uint include/linux/types.h:typedef unsigned int uint;
__u32 include/asm/types.h:typedef unsigned int __u32;

 

Structs

Here are the struct declarations for the table at the top:

 

exception_table_entry include/linux/module.h:
struct exception_table_entry {
     unsigned long insn, fixup;
};
iovec include/linux/uio.h:
struct iovec {
     void *iov_base;
     __kernel_size_t iov_len; };
itimerval include/linux/time.h:
struct itimerval {
     struct timeval it_interval; /* timer interval */
     struct timeval it_value; /* current value */
};
kernel_sym include/linux/module.h:
struct kernel_sym {
     unsigned long value;
     char name[60];
};
mmap_arg_struct arch/i386/kernel/sys_i386.c:
struct mmap_arg_struct {
     unsigned long addr;
     unsigned long len;
     unsigned long prot;
     unsigned long flags;
     unsigned long fd;
     unsigned long offset;
};
module include/linux/module.h:
struct module {
     unsigned long size_of_struct; /* sizeof(module) */
     struct module *next;
     const char *name;
     unsigned long size;
     union {
          atomic_t usecount;
          long pad;
     } uc;
     unsigned long flags; /* AUTOCLEAN et al */
     unsigned nsyms;
     unsigned ndeps;

     struct module_symbol *syms;
     struct module_ref *deps;
     struct module_ref *refs;
     int (*init)(void);
     void (*cleanup)(void);
     const struct exception_table_entry *ex_table_start;
     const struct exception_table_entry *ex_table_end;
/* Members past this point are extensions to the basic
module support and are optional. Use mod_opt_member()
to examine them. */
     const struct module_persist *persist_start;
     const struct module_persist *persist_end;
     int (*can_unload)(void);
};
module_persist include/linux/module.h:
struct module_persist; /* yes, it‘s empty */
module_ref include/linux/module.h:
struct module_ref {
     struct module *dep; /* "parent" pointer */
     struct module *ref; /* "child" pointer */
     struct module_ref *next_ref;
};
module_symbol include/linux/module.h:
struct module_symbol {
     unsigned long value;
     const char *name;
};
new_utsname include/linux/utsname.h:
struct new_utsname {
     char sysname[65];
     char nodename[65];
     char release[65];
     char version[65];
     char machine[65];
     char domainname[65];
};
__old_kernel_stat include/asm/stat.h:
struct __old_kernel_stat {
     unsigned short st_dev;
     unsigned short st_ino;
     unsigned short st_mode;
     unsigned short st_nlink;
     unsigned short st_uid;
     unsigned short st_gid;
     unsigned short st_rdev;
     unsigned long st_size;
     unsigned long st_atime;
     unsigned long st_mtime;
     unsigned long st_ctime;
};
oldold_utsname include/linux/utsname.h:
struct oldold_utsname {
     char sysname[9];
     char nodename[9];
     char release[9];
     char version[9];
     char machine[9];
};
old_sigaction include/asm/signal.h:
struct old_sigaction {
     __sighandler_t sa_handler;
     old_sigset_t sa_mask;
     unsigned long sa_flags;
     void (*sa_restorer)(void);
};
old_utsname include/linux/utsname.h:
struct old_utsname {
     char sysname[65];
     char nodename[65];
     char release[65];
     char version[65];
     char machine[65];
};
pollfd include/asm/poll.h:
struct pollfd {
     int fd;
     short events;
     short revents;
};
pt_regs include/asm/ptrace.h:
struct pt_regs {
     long ebx;
     long ecx;
     long edx;
     long esi;
     long edi;
     long ebp;
     long eax;
     int xds;
     int xes;
     long orig_eax;
     long eip;
     int xcs;
     long eflags;
     long esp;
     int xss;
};
revectored_struct include/asm/vm86.h:
struct revectored_struct {
     unsigned long __map[8];
};
rlimit include/linux/resource.h:
struct rlimit {
     long rlim_cur;
     long rlim_max;
};
rusage include/linux/resource.h:
struct rusage {
     struct timeval ru_utime; /* user time used */
     struct timeval ru_stime; /* system time used */
     long ru_maxrss; /* maximum resident set size */
     long ru_ixrss; /* integral shared memory size */
     long ru_idrss; /* integral unshared data size */
     long ru_isrss; /* integral unshared stack size */
     long ru_minflt; /* page reclaims */
     long ru_majflt; /* page faults */
     long ru_nswap; /* swaps */
     long ru_inblock; /* block input operations */
     long ru_oublock; /* block output operations */
     long ru_msgsnd; /* messages sent */
     long ru_msgrcv; /* messages received */
     long ru_nsignals; /* signals received */
     long ru_nvcsw; /* voluntary context switches */
     long ru_nivcsw; /* involuntary ‘‘ */
};
sched_param include/linux/sched.h:
struct sched_param {
     int sched_priority;
};
sel_arg_struct arch/i386/kernel/sys_i386.c:
struct sel_arg_struct {
     unsigned long n;
     fd_set *inp, *outp, *exp;
     struct timeval *tvp;
};
sigaction include/asm/signal.h:
struct sigaction {
     __sighandler_t sa_handler;
     unsigned long sa_flags;
     void (*sa_restorer)(void);
     sigset_t sa_mask; /* mask last for extensibility */
};
stat include/asm/stat.h:
struct stat {
     unsigned short st_dev;
     unsigned short __pad1;
     unsigned long st_ino;
     unsigned short st_mode;
     unsigned short st_nlink;
     unsigned short st_uid;
     unsigned short st_gid;
     unsigned short st_rdev;
     unsigned short __pad2;
     unsigned long st_size;
     unsigned long st_blksize;
     unsigned long st_blocks;
     unsigned long st_atime;
     unsigned long __unused1;
     unsigned long st_mtime;
     unsigned long __unused2;
     unsigned long st_ctime;
     unsigned long __unused3;
     unsigned long __unused4;
     unsigned long __unused5;
statfs include/asm/statfs.h:
struct statfs {
     long f_type;
     long f_bsize;
     long f_blocks;
     long f_bfree;
     long f_bavail;
     long f_files;
     long f_ffree;
     __kernel_fsid_t f_fsid;
     long f_namelen;
     long f_spare[6];
};
__sysctl_args include/linux/sysctl.h
struct __sysctl_args {
     int *name;
     int nlen;
     void *oldval;
     size_t *oldlenp;
     void *newval;
     size_t newlen;
     unsigned long __unused[4];
};
sysinfo include/linux/kernel.h:
struct sysinfo {
     long uptime; /* Seconds since boot */
     unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
     unsigned long totalram; /* Total usable main memory size */
     unsigned long freeram; /* Available memory size */
     unsigned long sharedram; /* Amount of shared memory */
     unsigned long bufferram; /* Memory used by buffers */
     unsigned long totalswap; /* Total swap space size */
     unsigned long freeswap; /* swap space still available */
     unsigned short procs; /* Number of current processes */
     char _f[22]; /* Pads structure to 64 bytes */
};
timex include/linux/timex.h:
struct timex {
     unsigned int modes; /* mode selector */
     long offset; /* time offset (usec) */
     long freq; /* frequency offset (scaled ppm) */
     long maxerror; /* maximum error (usec) */
     long esterror; /* estimated error (usec) */
     int status; /* clock command/status */
     long constant; /* pll time constant */
     long precision; /* clock precision (usec) (read only) */
     long tolerance; /* clock frequency tolerance (ppm)
      * (read only)
      */
     struct timeval time; /* (read only) */
     long tick; /* (modified) usecs between clock ticks */
     long ppsfreq; /* pps frequency (scaled ppm) (ro) */
     long jitter; /* pps jitter (us) (ro) */
     int shift; /* interval duration (s) (shift) (ro) */
     long stabil; /* pps stability (scaled ppm) (ro) */
     long jitcnt; /* jitter limit exceeded (ro) */
     long calcnt; /* calibration intervals (ro) */
     long errcnt; /* calibration errors (ro) */
     long stbcnt; /* stability limit exceeded (ro) */

     int :32; int :32; int :32; int :32;
     int :32; int :32; int :32; int :32;
     int :32; int :32; int :32; int :32;
};
timespec include/linux/time.h:
struct timespec {
     time_t tv_sec; /* seconds */
     long tv_nsec; /* nanoseconds */
};
timeval include/linux/time.h:
struct timeval {
     time_t tv_sec; /* seconds */
     suseconds_t tv_usec; /* microseconds */
};
timezone include/linux/time.h:
struct timezone {
     int tz_minuteswest; /* minutes west of Greenwich */
     int tz_dsttime; /* type of dst correction */
};
tms include/linux/times.h
struct tms {
     clock_t tms_utime;
     clock_t tms_stime;
     clock_t tms_cutime;
     clock_t tms_cstime;
};
ustat include/linux/types.h:
struct ustat {
     __kernel_daddr_t f_tfree;
     __kernel_ino_t f_tinode;
     char f_fname[6];
     char f_fpack[6];
};
utimbuf include/linux/utime.h:
struct utimbuf {
     time_t actime;
     time_t modtime;
};
vm86plus_info_struct include/asm/vm86.h:
struct vm86plus_info_struct {
     unsigned long force_return_for_pic:1;
     unsigned long vm86dbg_active:1;
     unsigned long vm86dbg_TFpendig:1;
     unsigned long unused:28;
     unsigned long is_vm86pus:1;
     unsigned char vm86dbg_intxxtab[32];
};
vm86plus_struct include/asm/vm86.h:
struct vm86plus_struct {
     struct vm86_regs regs;
     unsigned long flags;
     unsigned long screen_bitmap;
     unsigned long cpu_type;
     struct revectored_struct int_revectored;
     struct revectored_struct int21_revectored;
     struct vm86plus_info_struct vm86plus;
};
vm86_regs include/asm/vm86.h:
struct vm86_regs {
/* normal regs, with special meaning for the segment descriptors.. */
     long ebx;
     long ecx;
     long edx;
     long esi;
     long edi;
     long ebp;
     long eax;
     long __null_ds;
     long __null_es;
     long __null_fs;
     long __null_gs;
     long orig_eax;
     long eip;
     unsigned short cs, __csh;
     long eflags;
     long esp;
     unsigned short ss, __ssh;
/* these are specific to v86 mode: */
     unsigned short es, __esh;
     unsigned short ds, __dsh;
     unsigned short fs, __fsh;
     unsigned short gs, __gsh;
};
vm86_struct include/asm/vm86.h:
struct vm86_struct {
     struct vm86_regs regs;
     unsigned long flags;
     unsigned long screen_bitmap;
     unsigned long cpu_type;
     struct revectored_struct int_revectored;
     struct revectored_struct int21_revectored;
};

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