1 PCTFLD(3PROC) Process Control Library Functions PCTFLD(3PROC)
2
3 NAME
4 Pctlfd - obtain the process control file descriptor
5
6 SYNOPSIS
7 Process Control Library (libproc, -lproc)
8 #include <libproc.h>
9
10 int
11 Pctlfd(struct ps_prochandle *P);
12
13 DESCRIPTION
14 The Pctlfd() function returns a file descriptor to the underlying /proc
15 file system ctl file for the process identified by the handle P. This
16 may be used for injecting control operations manually; however, many
17 interfaces for using it are provided by libproc(3LIB) itself.
18
19 Only live processes have a control file descriptor. Process handles that
20 correspond to files and cores, created through Pgrab_file(3PROC) and
21 Pgrab_core(3PROC), do not have a corresponding file descriptor.
22
23 The file descriptor is invalidated when the process handle is released
24 through Prelease(3PROC) or if control is lost and the handle is reopened.
25
26 RETURN VALUES
27 Upon successful completion, the Pctlfd() function returns a valid file
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1 PCTFLD(3PROC) Process Control Library Functions PCTFLD(3PROC)
2
3 NAME
4 Pctlfd - obtain the process control file descriptor
5
6 LIBRARY
7 Process Control Library (libproc, -lproc)
8
9 SYNOPSIS
10 #include <libproc.h>
11
12 int
13 Pctlfd(struct ps_prochandle *P);
14
15 DESCRIPTION
16 The Pctlfd() function returns a file descriptor to the underlying /proc
17 file system ctl file for the process identified by the handle P. This
18 may be used for injecting control operations manually; however, many
19 interfaces for using it are provided by libproc(3LIB) itself.
20
21 Only live processes have a control file descriptor. Process handles that
22 correspond to files and cores, created through Pgrab_file(3PROC) and
23 Pgrab_core(3PROC), do not have a corresponding file descriptor.
24
25 The file descriptor is invalidated when the process handle is released
26 through Prelease(3PROC) or if control is lost and the handle is reopened.
27
28 RETURN VALUES
29 Upon successful completion, the Pctlfd() function returns a valid file
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