diff options
Diffstat (limited to 'usr/src/man/man3proc/Pread.3proc')
| -rw-r--r-- | usr/src/man/man3proc/Pread.3proc | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/usr/src/man/man3proc/Pread.3proc b/usr/src/man/man3proc/Pread.3proc index 8b4eb52da8..5a1e449c31 100644 --- a/usr/src/man/man3proc/Pread.3proc +++ b/usr/src/man/man3proc/Pread.3proc @@ -50,14 +50,15 @@ and is logically analogous to the .Xr pread 2 function. .Pp -For live processes, this function is equivalent to reading from the -/proc file system +For live processes, this function is equivalent to reading from the /proc file +system .Sy as -file for the process. For core files and file handles, it reads and -writes from the logical address space and not the corresponding offset -of the file itself. For example, a core file contains a sparse -representation of the address space of a crashed process and unmapped -regions are not present in the file. However, +file for the process. +For core files and file handles, it reads and writes from the logical address +space and not the corresponding offset of the file itself. +For example, a core file contains a sparse representation of the address space +of a crashed process and unmapped regions are not present in the file. +However, .Fa address still refers to the virtual addresses that were present at run-time and not those in the core file. @@ -73,7 +74,8 @@ into .Fa buf if either .Fa nbytes -has been read or a null terminator is encountered. The resulting data in +has been read or a null terminator is encountered. +The resulting data in .Fa buf will always be null terminated, even if no null terminator was found in the first @@ -85,7 +87,8 @@ Upon successful completion, the and .Fn Pread_string functions return a non-negative integer indicating the number of bytes -actually read. Otherwise, the functions return +actually read. +Otherwise, the functions return .Sy -1 and set .Sy errno |