From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/legacy/getusershell.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 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 0000000..5fecdec --- /dev/null +++ b/src/legacy/getusershell.c @@ -0,0 +1,32 @@ +#define _GNU_SOURCE +#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", "rbe"); + 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 v1.2.3