Read() Syscall | 32 Bit OS Dev (in C)

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United States Queso Fuego
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Published on ● Video Link: https://www.youtube.com/watch?v=uD0R6wV95k0


Duration: 57:50
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13

Adding a read() syscall to read bytes from files written to by write(), and (almost) reading text files with a 'type' command.
Errata: the memcpy function is still bad, that was mainly the source of not printing all 13 characters in the string.

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Repo state at the start of this video:
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cd amateuros
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Outline:
0:00 small changes since last video
2:28 start read() syscall
16:46 add read() test
34:40 add checks for open flags to read() & write()
38:16 add 'type' command to print file to screen
50:09 show a couple bugfixes & coming up/outro

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Music credits:
City Life by Artificial.Music | https://soundcloud.com/artificial-music/
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#readsyscall #kerneldev #cprogramming



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Tags:
queso fuego
read syscall
c programming
kernel dev
os dev
operating systems
reading text files
debugging