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| author | tjr <tjr@FreeBSD.org> | 2002-06-01 02:14:48 +0000 |
|---|---|---|
| committer | tjr <tjr@FreeBSD.org> | 2002-06-01 02:14:48 +0000 |
| commit | d3a1f7d9120d0d3374a03d33ab9fd3639588b95a (patch) | |
| tree | 6f9f6a02deb0b4b48ec74ae2dd4e3547dde24eca /bin/sh | |
| parent | fff7a365669b964928b679402547a2c0dd3428d3 (diff) | |
| download | FreeBSD-src-d3a1f7d9120d0d3374a03d33ab9fd3639588b95a.zip FreeBSD-src-d3a1f7d9120d0d3374a03d33ab9fd3639588b95a.tar.gz | |
Implement $PPID, the parent process ID of the shell.
Diffstat (limited to 'bin/sh')
| -rw-r--r-- | bin/sh/var.c | 8 | ||||
| -rw-r--r-- | bin/sh/var.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/bin/sh/var.c b/bin/sh/var.c index 297b82b..42c240c 100644 --- a/bin/sh/var.c +++ b/bin/sh/var.c @@ -91,6 +91,7 @@ struct var vifs; struct var vmail; struct var vmpath; struct var vpath; +struct var vppid; struct var vps1; struct var vps2; struct var vvers; @@ -116,6 +117,8 @@ const struct varinit varinit[] = { NULL }, { &vpath, VSTRFIXED|VTEXTFIXED, "PATH=/bin:/usr/bin", changepath }, + { &vppid, VSTRFIXED|VTEXTFIXED|VUNSET, "PPID=", + NULL }, /* * vps1 depends on uid */ @@ -165,6 +168,7 @@ INIT { void initvar(void) { + char ppid[20]; const struct varinit *ip; struct var *vp; struct var **vpp; @@ -189,6 +193,10 @@ initvar(void) vps1.text = geteuid() ? "PS1=$ " : "PS1=# "; vps1.flags = VSTRFIXED|VTEXTFIXED; } + if ((vppid.flags & VEXPORT) == 0) { + fmtstr(ppid, sizeof(ppid), "%d", (int)getppid()); + setvarsafe("PPID", ppid, 0); + } } /* diff --git a/bin/sh/var.h b/bin/sh/var.h index 0718a25..4177599 100644 --- a/bin/sh/var.h +++ b/bin/sh/var.h @@ -78,6 +78,7 @@ extern struct var vifs; extern struct var vmail; extern struct var vmpath; extern struct var vpath; +extern struct var vppid; extern struct var vps1; extern struct var vps2; #if ATTY |
