mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-04 18:28:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add sysctlbyname() for MacOS

Browse source
This commit is contained in:
Justine Tunney 2024-05-02 23:21:43 -07:00
parent 5c6877b02b
commit 181cd4cbe8
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
21 changed files with 193 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

33
ape/ape-m1.c
View file

@ -31,6 +31,8 @@
#include <string.h>
#include <sys/mman.h>
#include <sys/random.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <time.h>
#include <unistd.h>
@ -39,7 +41,7 @@
/* maximum path size that cosmo can take */
#define PATHSIZE (PATH_MAX < 1024 ? PATH_MAX : 1024)
#define SYSLIB_MAGIC ('s' | 'l' << 8 | 'i' << 16 | 'b' << 24)
#define SYSLIB_VERSION 9 /* sync with libc/runtime/syslib.internal.h */
#define SYSLIB_VERSION 10 /* sync with libc/runtime/syslib.internal.h */
struct Syslib {
int magic;
@ -106,6 +108,10 @@ struct Syslib {
OPTIONAL (cosmo lib should check __syslib->version) */
/* v9 (2024-01-31) */
int (*pthread_cpu_number_np)(size_t *);
/* v10 (2024-05-02) */
long (*sysctl)(int *, u_int, void *, size_t *, void *, size_t);
long (*sysctlbyname)(const char *, void *, size_t *, void *, size_t);
long (*sysctlnametomib)(const char *, int *, size_t *);
};
#define ELFCLASS32 1
@ -148,8 +154,8 @@ struct Syslib {
#define _COMM_PAGE_APRR_WRITE_ENABLE (_COMM_PAGE_START_ADDRESS + 0x110)
#define _COMM_PAGE_APRR_WRITE_DISABLE (_COMM_PAGE_START_ADDRESS + 0x118)
#define MIN(X, Y) ((Y) > (X) ? (X) : (Y))
#define MAX(X, Y) ((Y) < (X) ? (X) : (Y))
#define Min(X, Y) ((Y) > (X) ? (X) : (Y))
#define Max(X, Y) ((Y) < (X) ? (X) : (Y))
#define READ32(S) \
((unsigned)(255 & (S)[3]) << 030 | (unsigned)(255 & (S)[2]) << 020 | \
@ -552,6 +558,20 @@ static long sys_pselect(int nfds, fd_set *readfds, fd_set *writefds,
return sysret(pselect(nfds, readfds, writefds, errorfds, timeout, sigmask));
}
static long sys_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
void *newp, size_t newlen) {
return sysret(sysctl(name, namelen, oldp, oldlenp, newp, newlen));
}
static long sys_sysctlbyname(const char *name, void *oldp, size_t *oldlenp,
void *newp, size_t newlen) {
return sysret(sysctlbyname(name, oldp, oldlenp, newp, newlen));
}
static long sys_sysctlnametomib(const char *name, int *mibp, size_t *sizep) {
return sysret(sysctlnametomib(name, mibp, sizep));
}
__attribute__((__noreturn__)) static void Spawn(const char *exe, int fd,
long *sp, struct ElfEhdr *e,
struct ElfPhdr *p,
@ -596,7 +616,7 @@ __attribute__((__noreturn__)) static void Spawn(const char *exe, int fd,
continue;
c = p[j].p_vaddr & -pagesz;
d = (p[j].p_vaddr + p[j].p_memsz + (pagesz - 1)) & -pagesz;
if (MAX(a, c) < MIN(b, d)) {
if (Max(a, c) < Min(b, d)) {
Pexit(exe, 0, "ELF segments overlap each others virtual memory");
}
}
@ -670,7 +690,7 @@ __attribute__((__noreturn__)) static void Spawn(const char *exe, int fd,
a = p[i].p_vaddr + p[i].p_filesz; /* end of file content */
b = (a + (pagesz - 1)) & -pagesz; /* first pure bss page */
c = p[i].p_vaddr + p[i].p_memsz; /* end of segment data */
wipe = MIN(b - a, c - a);
wipe = Min(b - a, c - a);
if (wipe && (~prot1 & PROT_WRITE)) {
prot1 = PROT_READ | PROT_WRITE;
}
@ -970,6 +990,9 @@ int main(int argc, char **argv, char **envp) {
M->lib.dlclose = dlclose;
M->lib.dlerror = dlerror;
M->lib.pthread_cpu_number_np = pthread_cpu_number_np;
M->lib.sysctl = sys_sysctl;
M->lib.sysctlbyname = sys_sysctlbyname;
M->lib.sysctlnametomib = sys_sysctlnametomib;
/* getenv("_") is close enough to at_execfn */
execfn = 0;