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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-26 16:38:00 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-26 16:38:00 -0400 |
| commit | 97d5c458cfa039d857301e1ca7d5af3beb37131d (patch) | |
| tree | b460cd850d0537eb71806ba30358840377b27688 /static/inferno/man2/sys-werrstr.2 | |
| parent | b89dc2331a50c63f8b33272a5c4c61ab98abdaa3 (diff) | |
build: Better Build System
Diffstat (limited to 'static/inferno/man2/sys-werrstr.2')
| -rw-r--r-- | static/inferno/man2/sys-werrstr.2 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/static/inferno/man2/sys-werrstr.2 b/static/inferno/man2/sys-werrstr.2 new file mode 100644 index 00000000..add8206d --- /dev/null +++ b/static/inferno/man2/sys-werrstr.2 @@ -0,0 +1,26 @@ +.TH SYS-WERRSTR 2 +.SH NAME +werrstr \- set the system error string +.SH SYNOPSIS +.EX +include "sys.m"; +sys := load Sys Sys->PATH; + +werrstr(s: string): int; +.EE +.SH DESCRIPTION +When a system call fails, it returns an error value (often -1) +and records a string describing the error in a per-process location. +The verb +.B r +in +.IR sys-print (2) +outputs the error string. +.B Werrstr +sets the process's error string to +.IR s , +to allow a function in a module to mimic the error reporting +interface of a system call. +.SH SEE ALSO +.IR sys-intro (2), +.IR sys-print (2) |