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Kernel+LibC: Don't allow a directory to become a subdirectory of itself

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If you try to do this (e.g "mv directory directory"), sys$rename() will
now fail with EDIRINTOSELF.

Dr. POSIX says we should return EINVAL for this, but a custom error
code allows us to print a much more helpful error message when this
problem occurs. :^)
This commit is contained in:
Andreas Kling 2020-11-01 17:17:23 +01:00
parent 13aa3d2d62
commit a28f29c82c
3 changed files with 8 additions and 1 deletions
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3
Libraries/LibC/errno_numbers.h
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@ -99,4 +99,5 @@
#define EPROTO 71
#define ENOTSUP 72
#define EPFNOSUPPORT 73
#define EMAXERRNO 74
#define EDIRINTOSELF 74
#define EMAXERRNO 75