Mercurial > gnulib
changeset 245:36d6e7c81e32
GNU file utilities
author | Jim Meyering <jim@meyering.net> |
---|---|
date | Fri, 19 Aug 1994 22:32:41 +0000 |
parents | 555e15f4598a |
children | ed27c3582f3b |
files | lib/Makefile.in lib/ftruncate.c |
diffstat | 2 files changed, 42 insertions(+), 14 deletions(-) [+] |
line wrap: on
line diff
--- a/lib/Makefile.in Sat Jul 30 18:12:17 1994 +0000 +++ b/lib/Makefile.in Fri Aug 19 22:32:41 1994 +0000 @@ -50,7 +50,7 @@ DISTFILES = Makefile.in backupfile.h getopt.h modechange.h \ fnmatch.h fsusage.h mountlist.h pathmax.h safe-xstat.c.in safe-xstat.h.in \ -$(SOURCES) +getdate.c posixtm.c $(SOURCES) all: libfu.a @@ -148,6 +148,7 @@ modechange.o: modechange.h mountlist.o: mountlist.h xgetcwd.o: pathmax.h +eaccess.o fsusage.o isdir.o makepath.o mkdir.o rename.o: safe-stat.h # Tell versions [3.59,3.63) of GNU make not to export all variables. # Otherwise a system limit (for SysV at least) may be exceeded.
--- a/lib/ftruncate.c Sat Jul 30 18:12:17 1994 +0000 +++ b/lib/ftruncate.c Fri Aug 19 22:32:41 1994 +0000 @@ -1,5 +1,5 @@ /* ftruncate emulations that work on some System V's. - This file is in the public domain. */ + This file is in the public domain. */ #ifdef HAVE_CONFIG_H #if defined (CONFIG_BROKETS) @@ -15,7 +15,13 @@ #include <sys/types.h> #include <fcntl.h> +#include <errno.h> +#ifndef STDC_HEADERS +extern int errno; +#endif + #ifdef F_CHSIZE + int ftruncate (fd, length) int fd; @@ -23,14 +29,17 @@ { return fcntl (fd, F_CHSIZE, length); } -#else + +#else /* not F_CHSIZE */ #ifdef F_FREESP -/* The following function was written by - kucharsk@Solbourne.com (William Kucharski) */ + +/* By William Kucharski <kucharsk@netcom.com>. */ #include <sys/stat.h> -#include <errno.h> + +#ifdef HAVE_UNISTD_H #include <unistd.h> +#endif int ftruncate (fd, length) @@ -55,23 +64,28 @@ } else { + /* Truncate length. */ + fl.l_whence = 0; fl.l_len = 0; fl.l_start = length; - fl.l_type = F_WRLCK; /* Write lock on file space. */ + fl.l_type = F_WRLCK; /* write lock on file space */ - /* This relies on the UNDOCUMENTED F_FREESP argument to - fcntl, which truncates the file so that it ends at the - position indicated by fl.l_start. - Will minor miracles never cease? */ + /* This relies on the *undocumented* F_FREESP argument to fcntl, + which truncates the file so that it ends at the position + indicated by fl.l_start. Will minor miracles never cease? */ + if (fcntl (fd, F_FREESP, &fl) < 0) return -1; } return 0; } -#else + +#else /* not F_CHSIZE nor F_FREESP */ +#ifdef HAVE_CHSIZE + int ftruncate (fd, length) int fd; @@ -79,5 +93,18 @@ { return chsize (fd, length); } -#endif -#endif + +#else /* not F_CHSIZE nor F_FREESP nor HAVE_CHSIZE */ + +int +ftruncate (fd, length) + int fd; + off_t length; +{ + errno = EIO; + return -1; +} + +#endif /* not HAVE_CHSIZE */ +#endif /* not F_FREESP */ +#endif /* not F_CHSIZE */