Where are syscalls located in glibc source

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What you’ve found is a stub function for systems it’s not implemented on. You need to look under the sysdeps tree for the actual implementation. The following may be of interest:

  • sysdeps/unix/sysv/linux
  • sysdeps/posix
  • sysdeps/i386 (or x86_64 or whatever your cpu arch is)

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