mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-11-26 07:55:01 +00:00
Code Issues Releases Activity

MFV: less: Do not trust st_size if it equals zero

Browse Source 
This is a smaller version of upstream
1fafd968b48e5cea6c85f126d77071a8de707a55 to address the
issue that less not being able to operate on files
residing in pseudo-filesystems that advertize a zero
size value.

PR:		bin/276133

(cherry picked from commit cae336280b)
This commit is contained in:
Ricardo Branco 2024-04-23 22:29:46 -07:00 committed by Xin LI
parent 5da0bdbf28
commit 302d0acea8
1 changed files with 2 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
contrib/less/ch.c
View File

@ -700,7 +700,6 @@ public void ch_flush(void)
ch_block = 0; /* ch_fpos / LBUFSIZE; */
ch_offset = 0; /* ch_fpos % LBUFSIZE; */
#if HAVE_PROCFS
/*
* This is a kludge to workaround a Linux kernel bug: files in
* /proc have a size of 0 according to fstat() but have readable
@ -709,17 +708,9 @@ public void ch_flush(void)
*/
if (ch_fsize == 0)
{
struct statfs st;
if (fstatfs(ch_file, &st) == 0)
{
if (st.f_type == PROC_SUPER_MAGIC)
{
ch_fsize = NULL_POSITION;
ch_flags &= ~CH_CANSEEK;
}
}
ch_fsize = NULL_POSITION;
ch_flags &= ~CH_CANSEEK;
}
#endif
if (lseek(ch_file, (off_t)0, SEEK_SET) == BAD_LSEEK)
{