Date: Sun, 15 Feb 2015 21:52:42 +0000 (UTC) From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r278822 - user/dchagin/lemul/sys/compat/linprocfs Message-ID: <201502152152.t1FLqgXS079810@svn.freebsd.org>
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Author: dchagin Date: Sun Feb 15 21:52:41 2015 New Revision: 278822 URL: https://svnweb.freebsd.org/changeset/base/278822 Log: Add aupport for /proc/<pid>/auxv. Modified: user/dchagin/lemul/sys/compat/linprocfs/linprocfs.c Modified: user/dchagin/lemul/sys/compat/linprocfs/linprocfs.c ============================================================================== --- user/dchagin/lemul/sys/compat/linprocfs/linprocfs.c Sun Feb 15 21:50:08 2015 (r278821) +++ user/dchagin/lemul/sys/compat/linprocfs/linprocfs.c Sun Feb 15 21:52:41 2015 (r278822) @@ -1397,6 +1397,38 @@ linprocfs_douuid(PFS_FILL_ARGS) return(0); } +/* + * Filler function for proc/pid/auxv + */ +static int +linprocfs_doauxv(PFS_FILL_ARGS) +{ + int ret; + + PROC_LOCK(p); + if ((ret = p_candebug(td, p)) != 0) { + PROC_UNLOCK(p); + return (ret); + } + + /* + * Mimic linux behavior and pass only processes with usermode + * address space as valid. Return zero silently otherwize. + */ + if (p->p_vmspace == &vmspace0) { + PROC_UNLOCK(p); + return (0); + } + + if ((p->p_flag & P_SYSTEM) != 0) { + PROC_UNLOCK(p); + return (0); + } + + PROC_UNLOCK(p); + + return (proc_getauxv(td, p, sb)); +} /* * Constructor @@ -1472,6 +1504,8 @@ linprocfs_init(PFS_INIT_ARGS) NULL, NULL, NULL, PFS_RD); pfs_create_link(dir, "fd", &linprocfs_dofdescfs, NULL, NULL, NULL, 0); + pfs_create_file(dir, "auxv", &linprocfs_doauxv, + NULL, NULL, NULL, PFS_RD); /* /proc/scsi/... */ dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0);help
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