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Differential D52487

fcntl(F_SETFL): only allow one thread to perform F_SETFL
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Authored by kib on Sep 11 2025, 10:12 AM.
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F150531839: D52487.diff
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jhb
markj
Commits
rG7bf3b6d8e426: fcntl(F_SETFL): only allow one thread to perform F_SETFL
rG11870bb24801: fcntl(F_SETFL): only allow one thread to perform F_SETFL
rG4c3a868d13c0: fcntl(F_SETFL): only allow one thread to perform F_SETFL
rG40a42785dbba: fcntl(F_SETFL): only allow one thread to perform F_SETFL
Summary
Use f_vflags file locking for this.
Allowing more than one thread handling F_SETFL might cause de-sync
between real driver state and flags.

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rG FreeBSD src repository
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sys/
kern/
3 lines
36 lines
sys/
4 lines

Diff 162417

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sys/kern/kern_descrip.c

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sys/kern/vfs_vnops.c

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sys/sys/file.h

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