From b9bb8f67bbac9bab5314fb00974ad469476e936e Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 7 Sep 2012 00:48:25 -0400 Subject: cleanup src/linux and src/misc trees, etc. previously, it was pretty much random which one of these trees a given function appeared in. they have now been organized into: src/linux: non-POSIX linux syscalls (possibly shard with other nixen) src/legacy: various obsolete/legacy functions, mostly wrappers src/misc: still mostly uncategorized; some misc POSIX, some nonstd src/crypt: crypt hash functions further cleanup will be done later. --- src/legacy/getusershell.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 src/legacy/getusershell.c (limited to 'src/legacy/getusershell.c') diff --git a/src/legacy/getusershell.c b/src/legacy/getusershell.c new file mode 100644 index 00000000..683158c8 --- /dev/null +++ b/src/legacy/getusershell.c @@ -0,0 +1,33 @@ +#define _GNU_SOURCE +#include +#include +#include + +static const char defshells[] = "/bin/sh\n/bin/csh\n"; + +static char *line; +static size_t linesize; +static FILE *f; + +void endusershell(void) +{ + if (f) fclose(f); + f = 0; +} + +void setusershell(void) +{ + if (!f) f = fopen("/etc/shells", "rb"); + if (!f) f = fmemopen((void *)defshells, sizeof defshells - 1, "rb"); +} + +char *getusershell(void) +{ + ssize_t l; + if (!f) setusershell(); + if (!f) return 0; + l = getline(&line, &linesize, f); + if (l <= 0) return 0; + if (line[l-1]=='\n') line[l-1]=0; + return line; +} -- cgit v1.2.1