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Support sysctl() queries for uname()
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src/kernel/emulation/linux/misc/sysctl.c
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src/kernel/emulation/linux/misc/sysctl.c
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#include "sysctl_inc.h"
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#include <stddef.h>
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#include <limits.h>
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#include "../ext/sys/utsname.h"
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static long sysctl_name_to_oid(const char* name, int* oid_name,
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unsigned long* oid_len);
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_HW_CPUSUBTYPE,
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_HW_CPUTHREADTYPE
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};
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static struct linux_utsname lu;
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static void copyout_string(const char* str, char* out, unsigned long* out_len);
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static void need_uname(void);
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long sys_sysctl(int* name, unsigned int nlen, void* old,
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unsigned long* oldlen, void* _new, unsigned long newlen)
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if (nlen != 2)
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return -ENOTDIR;
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// String values
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switch (name[1])
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{
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case HW_MACHINE:
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{
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need_uname();
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copyout_string(lu.machine, (char*) old, oldlen);
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return 0;
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}
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}
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// Integer values
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if (*oldlen < sizeof(int))
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return -EINVAL;
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*oldlen = sizeof(int);
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return 0;
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}
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}
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else if (name[0] == CTL_KERN)
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{
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need_uname();
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// String values
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switch (name[1])
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{
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case KERN_OSTYPE:
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copyout_string(lu.sysname, (char*) old, oldlen);
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return 0;
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case KERN_HOSTNAME:
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copyout_string(lu.nodename, (char*) old, oldlen);
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return 0;
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case KERN_OSRELEASE:
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copyout_string(lu.release, (char*) old, oldlen);
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return 0;
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case KERN_VERSION:
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copyout_string(lu.version, (char*) old, oldlen);
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return 0;
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case KERN_DOMAINNAME:
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copyout_string(lu.domainname, (char*) old, oldlen);
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return 0;
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}
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}
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return -ENOTDIR;
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}
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static void need_uname(void)
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{
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// Cache __linux_uname results
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if (!lu.sysname[0])
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{
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__linux_uname(&lu);
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}
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}
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extern unsigned long strlcpy(char* dst, const char* src, unsigned long size);
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static void copyout_string(const char* str, char* out, unsigned long* out_len)
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{
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unsigned long len;
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len = strlcpy(out, str, *out_len);
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if (len < *out_len)
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*out_len = len;
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}
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static long sysctl_name_to_oid(const char* name, int* oid_name,
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src/kernel/emulation/linux/misc/sysctl_inc.h
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src/kernel/emulation/linux/misc/sysctl_inc.h
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#define HW_AVAILCPU 25
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#define HW_MAXID 26
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#define KERN_OSTYPE 1
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#define KERN_OSRELEASE 2
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#define KERN_OSREV 3
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#define KERN_VERSION 4
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#define KERN_MAXVNODES 5
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#define KERN_MAXPROC 6
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#define KERN_MAXFILES 7
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#define KERN_ARGMAX 8
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#define KERN_SECURELVL 9
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#define KERN_HOSTNAME 10
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#define KERN_HOSTID 11
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#define KERN_CLOCKRATE 12
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#define KERN_VNODE 13
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#define KERN_PROC 14
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#define KERN_FILE 15
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#define KERN_PROF 16
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#define KERN_POSIX1 17
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#define KERN_NGROUPS 18
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#define KERN_JOB_CONTROL 19
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#define KERN_SAVED_IDS 20
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#define KERN_BOOTTIME 21
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#define KERN_NISDOMAINNAME 22
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#define KERN_DOMAINNAME KERN_NISDOMAINNAME
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#define KERN_MAXPARTITIONS 23
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#define KERN_KDEBUG 24
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#define KERN_UPDATEINTERVAL 25
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#define KERN_OSRELDATE 26
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#define KERN_NTP_PLL 27
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#define KERN_BOOTFILE 28
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#define KERN_MAXFILESPERPROC 29
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#define KERN_MAXPROCPERUID 30
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#define KERN_DUMPDEV 31
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#define KERN_IPC 32
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#define KERN_DUMMY 33
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#define KERN_PS_STRINGS 34
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#define KERN_USRSTACK32 35
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#define KERN_LOGSIGEXIT 36
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#define KERN_SYMFILE 37
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#define KERN_PROCARGS 38
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#define KERN_NETBOOT 40
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#define KERN_SYSV 42
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#define KERN_AFFINITY 43
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#define KERN_TRANSLATE 44
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#define KERN_CLASSIC KERN_TRANSLATE
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#define KERN_EXEC 45
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#define KERN_CLASSICHANDLER KERN_EXEC
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#define KERN_AIOMAX 46
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#define KERN_AIOPROCMAX 47
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#define KERN_AIOTHREADS 48
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#define KERN_PROCARGS2 49
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#define KERN_COREFILE 50
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#define KERN_COREDUMP 51
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#define KERN_SUGID_COREDUMP 52
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#define KERN_PROCDELAYTERM 53
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#define KERN_SHREG_PRIVATIZABLE 54
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#define KERN_LOW_PRI_WINDOW 56
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#define KERN_LOW_PRI_DELAY 57
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#define KERN_POSIX 58
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#define KERN_USRSTACK64 59
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#define KERN_NX_PROTECTION 60
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#define KERN_TFP 61
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#define KERN_PROCNAME 62
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#define KERN_THALTSTACK 63
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#define KERN_SPECULATIVE_READS 64
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#define KERN_OSVERSION 65
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#define KERN_SAFEBOOT 66
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#define KERN_LCTX 67
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#define KERN_RAGEVNODE 68
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#define KERN_TTY 69
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#define KERN_CHECKOPENEVT 70
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#define KERN_THREADNAME 71
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#define KERN_MAXID 72
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#endif
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