mirror of
git://git.code.sf.net/p/cdesktopenv/code
synced 2025-03-09 15:50:02 +00:00
3de4da5afb
Windows/Cygwin requires onerous special handling and the definition of additional _imp__* symbols to import/export symbols between dynamically linked binaries. Its support in AST used a lot of macros and code obfuscation. In the features/common test for this, AT&T called this the "Microsoft import/export nonsense". They're right, it's nonsense. Somehow, Microsoft's POSIX layer, SFU/Interix, always managed without it. No one has time to maintain this (especially considering how incredibly sluggish Cygwin is). And in fact, it had already fallen victim to bit rot; I confirmed this in my early experiments with reintroducing dynamic library support. No one has time to fix it, either. So, my apologies to any Cygwin fans; ksh 93u+m will never support dynamically loadable built-ins on Cygwin, even when I do manage to reintroduce dynamic linking properly.
155 lines
4 KiB
C
155 lines
4 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2022 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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#include <ast.h>
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#include <ls.h>
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#if _lib_statvfs
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NoN(statvfs)
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#else
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#include <error.h>
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#define HUH (-1)
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#if _lib_statfs && _mem_f_files_statfs && ( _sys_statfs || _sys_vfs || _sys_mount )
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#if _sys_statfs
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#include <sys/statfs.h>
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#else
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#if _sys_vfs
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#include <sys/vfs.h>
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#else
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#if _sys_mount
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#if _lib_getmntinfo
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#include <sys/param.h> /* expect some macro redefinitions here */
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#endif
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#include <sys/mount.h>
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#endif
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#endif
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#endif
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#if _lib_statfs4
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#define FSTATFS(a,b) fstatfs(a,b,sizeof(struct statfs),0)
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#define STATFS(a,b) statfs(a,b,sizeof(struct statfs),0)
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#else
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#define FSTATFS(a,b) fstatfs(a,b)
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#define STATFS(a,b) statfs(a,b)
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#endif
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static void
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us2v(register struct statfs* ufs, register struct stat* st, register struct statvfs* vfs)
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{
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memset(vfs, 0, sizeof(*vfs));
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vfs->f_bsize = vfs->f_frsize = ufs->f_bsize;
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vfs->f_blocks = ufs->f_blocks;
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vfs->f_bfree = ufs->f_bfree;
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vfs->f_bavail =
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#if _mem_f_bavail_statfs
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ufs->f_bavail;
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#else
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ufs->f_bfree;
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#endif
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vfs->f_files = ufs->f_files;
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vfs->f_ffree = ufs->f_ffree;
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vfs->f_favail = (ufs->f_ffree > 10) ? (ufs->f_ffree - 10) : 0;
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vfs->f_fsid = st->st_dev;
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strlcpy(vfs->f_basetype, FS_default, sizeof(vfs->f_basetype) - 1);
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vfs->f_namemax = 14;
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strlcpy(vfs->f_fstr, vfs->f_basetype, sizeof(vfs->f_fstr) - 1);
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}
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extern int
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fstatvfs(int fd, struct statvfs* vfs)
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{
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struct statfs ufs;
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struct stat st;
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if (FSTATFS(fd, &ufs) || fstat(fd, &st))
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return(-1);
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us2v(&ufs, &st, vfs);
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return(0);
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}
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extern int
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statvfs(const char* path, struct statvfs* vfs)
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{
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struct statfs ufs;
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struct stat st;
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if (STATFS(path, &ufs) || stat(path, &st))
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return(-1);
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us2v(&ufs, &st, vfs);
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return(0);
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}
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#else
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static void
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s2v(register struct stat* st, register struct statvfs* vfs)
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{
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memset(vfs, 0, sizeof(*vfs));
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vfs->f_bsize = vfs->f_frsize =
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#if _mem_st_blksize_stat
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st->st_blksize;
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#else
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512;
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#endif
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vfs->f_blocks = HUH;
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vfs->f_bfree = HUH;
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vfs->f_files = HUH;
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vfs->f_ffree = HUH;
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vfs->f_favail = HUH;
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vfs->f_fsid = st->st_dev;
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strlcpy(vfs->f_basetype, FS_default, sizeof(vfs->f_basetype));
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vfs->f_namemax = 14;
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strlcpy(vfs->f_fstr, vfs->f_basetype, sizeof(vfs->f_fstr));
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}
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extern int
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fstatvfs(int fd, struct statvfs* vfs)
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{
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struct stat st;
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if (fstat(fd, &st))
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return(-1);
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s2v(&st, vfs);
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return(0);
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}
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extern int
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statvfs(const char* path, struct statvfs* vfs)
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{
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struct stat st;
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if (stat(path, &st))
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return(-1);
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s2v(&st, vfs);
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return(0);
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}
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#endif
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#endif
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