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sysconf: add _SC_PAGESIZE sysconf support

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MIRTOS-262

Also implement getpagesize() based on sysconf(_SC_PAGESIZE).

Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
Change-Id: Ib6baccb9f7dac19f5e3c681db1c51e8a2fe8d3fe
This commit is contained in:
liuhaitao 2020-08-31 16:58:26 +08:00
parent 5cc042dc1a
commit da9b962e97
2 changed files with 9 additions and 0 deletions
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1
include/unistd.h
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@ -274,6 +274,7 @@
#define link(p1, p2) symlink((p1), (p2))
#define fdatasync(f) fsync(f)
#define getdtablesize(f) ((int)sysconf(_SC_OPEN_MAX))
#define getpagesize(f) ((int)sysconf(_SC_PAGESIZE))
/****************************************************************************
* Public Data

8
libs/libc/unistd/lib_sysconf.c
View file

@ -241,6 +241,14 @@ long sysconf(int name)
return 1;
#endif
case _SC_PAGESIZE:
#ifdef CONFIG_MM_PGSIZE
return CONFIG_MM_PGSIZE;
#else
#define PAGESIZE 4096
return PAGESIZE;
#endif
default:
#if 0 /* Assume valid but not implemented for the time being */
errcode = EINVAL;