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authorAdhemerval Zanella Netto <adhemerval.zanella@linaro.org>2023-08-24 13:42:19 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2023-09-05 13:08:59 -0300
commite7190fc73dbc8a1f8f94f8ccacd9a190fa5e609c (patch)
tree0070895e116c7250463b90b643f8727466bfbb5b /sysdeps/unix/sysv/linux/alpha
parent0d6f9f626521678f330f8bfee89e1cdb7e2b1062 (diff)
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linux: Add pidfd_getpid
This interface allows to obtain the associated process ID from the
process file descriptor.  It is done by parsing the procps fdinfo
information.  Its prototype is:

   pid_t pidfd_getpid (int fd)

It returns the associated pid or -1 in case of an error and sets the
errno accordingly.  The possible errno values are those from open, read,
and close (used on procps parsing), along with:

   - EBADF if the FD is negative, does not have a PID associated, or if
     the fdinfo fields contain a value larger than pid_t.

   - EREMOTE if the PID is in a separate namespace.

   - ESRCH if the process is already terminated.

Checked on x86_64-linux-gnu on Linux 4.15 (no CLONE_PIDFD or waitid
support), Linux 5.4 (full support), and Linux 6.2.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha')
-rw-r--r--sysdeps/unix/sysv/linux/alpha/libc.abilist1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 02c43beb13..09c03b0e3f 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2782,6 +2782,7 @@ GLIBC_2.38 strlcat F
 GLIBC_2.38 strlcpy F
 GLIBC_2.38 wcslcat F
 GLIBC_2.38 wcslcpy F
+GLIBC_2.39 pidfd_getpid F
 GLIBC_2.39 pidfd_spawn F
 GLIBC_2.39 pidfd_spawnp F
 GLIBC_2.39 posix_spawnattr_getcgroup_np F