diff options
Diffstat (limited to 'libio')
| -rw-r--r-- | libio/Makefile | 2 | ||||
| -rw-r--r-- | libio/fileops.c | 17 | ||||
| -rw-r--r-- | libio/tst-atime.c | 97 | ||||
| -rw-r--r-- | libio/tst-eof.c | 79 |
4 files changed, 188 insertions, 7 deletions
diff --git a/libio/Makefile b/libio/Makefile index 36c8ba60db..59948668b2 100644 --- a/libio/Makefile +++ b/libio/Makefile @@ -49,7 +49,7 @@ routines := \ tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc \ tst_wprintf2 tst-widetext test-fmemopen tst-ext tst-fopenloc \ tst-fgetws tst-ungetwc1 tst-ungetwc2 tst-swscanf tst-sscanf \ - tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 + tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 tst-atime tst-eof test-srcs = test-freopen all: # Make this the default target; it will be defined in Rules. diff --git a/libio/fileops.c b/libio/fileops.c index 42bba7aa21..20794955a8 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -608,6 +608,13 @@ _IO_file_underflow_mmap (_IO_FILE *fp) { if (fp->_IO_read_end < fp->_IO_buf_end) { + /* A stupid requirement in POSIX says that the first read on a + stream must update the atime. Just read a single byte. We + don't have to worry about repositioning the file descriptor + since the following seek defines its position anyway. */ + char ignore[1]; + read (fp->_fileno, ignore, 1); + if ( # ifdef _G_LSEEK64 _G_LSEEK64 (fp->_fileno, fp->_IO_buf_end - fp->_IO_buf_base, @@ -1262,12 +1269,10 @@ _IO_file_xsgetn_mmap (fp, data, n) } } - if (have == 0) - { - if (s == (char *) data) - fp->_flags |= _IO_EOF_SEEN; - } - else + if (have < n) + fp->_flags |= _IO_EOF_SEEN; + + if (have != 0) { have = MIN (have, n); #ifdef _LIBC diff --git a/libio/tst-atime.c b/libio/tst-atime.c new file mode 100644 index 0000000000..2df64c3382 --- /dev/null +++ b/libio/tst-atime.c @@ -0,0 +1,97 @@ +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/stat.h> + + +static int do_test (void); +#define TEST_FUNCTION do_test () +#define TIMEOUT 5 +#include <test-skeleton.c> + + +static int +do_test (void) +{ + char *buf; + int fd; + FILE *fp; + int ch; + struct stat st1; + struct stat st2; + + buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-atime.XXXXXX"); + if (buf == NULL) + { + printf ("cannot allocate memory: %m\n"); + return 1; + } + stpcpy (stpcpy (buf, test_dir), "/tst-atime.XXXXXX"); + + fd = mkstemp (buf); + if (fd == -1) + { + printf ("cannot open temporary file: %m\n"); + return 1; + } + + /* Make sure it gets removed. */ + add_temp_file (buf); + + if (write (fd, "some string\n", 12) != 12) + { + printf ("cannot write temporary file: %m\n"); + return 1; + } + + if (lseek (fd, 0, SEEK_SET) == (off_t) -1) + { + printf ("cannot reposition temporary file: %m\n"); + return 1; + } + + fp = fdopen (fd, "r"); + if (fp == NULL) + { + printf ("cannot create stream: %m\n"); + return 1; + } + + if (fstat (fd, &st1) == -1) + { + printf ("first stat failed: %m\n"); + return 1; + } + + sleep (2); + + ch = fgetc (fp); + if (ch != 's') + { + printf ("did not read correct character: got '%c', expected 's'\n", ch); + return 1; + } + + if (fstat (fd, &st2) == -1) + { + printf ("second stat failed: %m\n"); + return 1; + } + + if (st1.st_atime > st2.st_atime) + { + puts ("second atime smaller"); + return 1; + } + else if (st1.st_atime == st2.st_atime) + { + puts ("atime has not changed"); + return 1; + } + + fclose (fp); + + return 0; +} diff --git a/libio/tst-eof.c b/libio/tst-eof.c new file mode 100644 index 0000000000..627eaf8ac5 --- /dev/null +++ b/libio/tst-eof.c @@ -0,0 +1,79 @@ +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + + +static int do_test (void); +#define TEST_FUNCTION do_test () +#include <test-skeleton.c> + + +static int +do_test (void) +{ + char *buf; + int fd; + FILE *fp; + int ch; + char tm[20]; + + buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-eof.XXXXXX"); + if (buf == NULL) + { + printf ("cannot allocate memory: %m\n"); + return 1; + } + stpcpy (stpcpy (buf, test_dir), "/tst-eof.XXXXXX"); + + fd = mkstemp (buf); + if (fd == -1) + { + printf ("cannot open temporary file: %m\n"); + return 1; + } + + /* Make sure it gets removed. */ + add_temp_file (buf); + + if (write (fd, "some string\n", 12) != 12) + { + printf ("cannot write temporary file: %m\n"); + return 1; + } + + if (lseek (fd, 0, SEEK_SET) == (off_t) -1) + { + printf ("cannot reposition temporary file: %m\n"); + return 1; + } + + fp = fdopen (fd, "r"); + if (fp == NULL) + { + printf ("cannot create stream: %m\n"); + return 1; + } + + if (feof (fp)) + { + puts ("EOF set after fdopen"); + return 1; + } + + if (fread (buf, 1, 20, fp) != 12) + { + puts ("didn't read the correct number of bytes"); + return 1; + } + + if (! feof (fp)) + { + puts ("EOF not set after fread"); + return 1; + } + + fclose (fp); + + return 0; +} |