From d086d0976e0bec90c4aceeb16e7edf130e10054a Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Fri, 19 Aug 1994 22:32:41 +0000 Subject: [PATCH] GNU file utilities --- lib/Makefile.in | 3 ++- lib/ftruncate.c | 53 +++++++++++++++++++++++++++++++++++++------------ 2 files changed, 42 insertions(+), 14 deletions(-) diff --git a/lib/Makefile.in b/lib/Makefile.in index 235a9ca960..45780d8919 100644 --- a/lib/Makefile.in +++ b/lib/Makefile.in @@ -50,7 +50,7 @@ stripslash.o xgetcwd.o xmalloc.o xstrdup.o userspec.o yesno.o \ 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 @@ getopt1.o: getopt.h 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. diff --git a/lib/ftruncate.c b/lib/ftruncate.c index bfd0ae5bf2..04156b76db 100644 --- a/lib/ftruncate.c +++ b/lib/ftruncate.c @@ -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 #include +#include +#ifndef STDC_HEADERS +extern int errno; +#endif + #ifdef F_CHSIZE + int ftruncate (fd, length) int fd; @@ -23,14 +29,17 @@ ftruncate (fd, length) { 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 . */ #include -#include + +#ifdef HAVE_UNISTD_H #include +#endif int ftruncate (fd, length) @@ -55,23 +64,28 @@ ftruncate (fd, length) } 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 @@ ftruncate (fd, length) { 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 */ -- 2.39.5