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Quick links About pvs
Syntax
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About pvs
Display the internal version information of dynamic objects
within an ELF file. Commonly these files are dynamic executables and
shared objects, and possibly relocatable objects. This version
information can fall into one of the following two categories:
Version definitions described the interface
made available by an ELF file. Each version definition is associated
to a set of global symbols provided by the file.
Version dependencies describe the binding
requirements of dynamic objects on the version definition of any
shared object dependencies. When a dynamic object is built with a
shared object, the link-editor records information within the dynamic
object indicating that the shared object is a dependency.
Syntax
pvs [-d] [-l] [-n] [-o] [-r] [-s] [-v] [-N name] file
| -d |
Print version definition information. |
| -l |
When used with the -s option, print any symbols that have been reduced from global to local
binding due to versioning. By convention, these symbol entries are located in the .symtab section, and fall between the FILE symbol representing the
output file, and the FILE symbol representing the first input file used to generate the output file. These reduced symbol entries are assigned the fabricated version definition _REDUCED_. No
reduced symbols will be printed if the file has been stripped, or if the symbol
entry convention cannot be determined. |
| -n |
Normalize version definition information. By default, all version definitions within the object are displayed. However, version definitions may inherit other version definitions, and under
normalization only the head of each inheritance list is displayed. |
| -o |
Create one-line version definition output. By default, file, version definitions, and any symbol output is indented to ease human inspection. This option prefixes each output line with the file and version definition name and may be more useful for analysis with automated tools. |
| -r |
Print version dependency (requirements)
information. |
| -s |
Print the symbols associated with each version definition. Any data symbols are accompanied with the size, in bytes, of the data item. |
| -v |
Verbose output. Indicates any weak version
definitions, and any version definition inheritance. When used with the -N and -d options, the
inheritance of the base version definition is also shown. When used with the -s option, the version
symbol definition is also shown. |
| -N name |
Print only the information for the given version
definition name and any of its inherited version definitions (when used with the -d option), or for the given dependency file name (when used with the -r option). |
| file |
The ELF file about which internal version
information is displayed. |
Examples
pvs -d /usr/lib/libelf.so.1 -display version
definition of the ELF file libelf.so.1
Related commands
ld
ldd
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