├── System call.pdf
├── Installation.pdf
├── README.md
└── Systemcall.c


/System call.pdf:
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https://raw.githubusercontent.com/Sisay-8926/macOs-ventura-installation/HEAD/System call.pdf


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/Installation.pdf:
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https://raw.githubusercontent.com/Sisay-8926/macOs-ventura-installation/HEAD/Installation.pdf


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/README.md:
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 1 | # macOs-ventura-installation
 2 | 
 3 | ## Installtion documentation
 4 | 
 5 | focuses on macOS Ventura. It covers the OS's features, hardware/software requirements,
 6 | advantages, disadvantages, and includes sections on virtualization 
 7 | in modern operating systems. The report concludes with future outlooks and recommendations 
 8 | for users.
 9 | ## System call documentation
10 | focusing on implementing the gettimeofday() system call in C on macOS Ventura. It includes
11 | a code example demonstrating how to retrieve and print time with microsecond precision.
12 | 


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/Systemcall.c:
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 1 | #include <mach/mach_time.h>
 2 | #include <sys/time.h>
 3 | 
 4 | int gettimeofday(struct timeval *tv, void *tz) {
 5 |     if (tv) {
 6 |         // Get current time from Mach absolute time
 7 |         uint64_t now = mach_absolute_time();
 8 |         
 9 |         // Convert Mach time to nanoseconds
10 |         mach_timebase_info_data_t timebase;
11 |         mach_timebase_info(&timebase);
12 |         uint64_t nanos = now * timebase.numer / timebase.denom;
13 |         
14 |         // Convert to timeval
15 |         tv->tv_sec = nanos / NSEC_PER_SEC;
16 |         tv->tv_usec = (nanos % NSEC_PER_SEC) / 1000;
17 |     }
18 |     
19 |     // macOS ignores the timezone parameter
20 |     if (tz) {
21 |         // On macOS, this would typically be set to NULL
22 |     }
23 |     
24 |     return 0;
25 | }
26 | 
27 | 
28 | 


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