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Diffstat (limited to 'src/skaembutils/s6-dumpenv.c')
-rw-r--r--src/skaembutils/s6-dumpenv.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/src/skaembutils/s6-dumpenv.c b/src/skaembutils/s6-dumpenv.c
new file mode 100644
index 0000000..4bed6c8
--- /dev/null
+++ b/src/skaembutils/s6-dumpenv.c
@@ -0,0 +1,63 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <skalibs/uint.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/djbunix.h>
+
+#define USAGE "s6-dumpenv [ -m mode ] envdir"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+ mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ;
+ unsigned int dirlen ;
+
+ PROG = "s6-printenv" ;
+ {
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ register int opt = subgetopt_r(argc, argv, "m:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ case 'm' : if (!uint0_oscan(l.arg, &mode)) dieusage() ; break ;
+ default : dieusage() ;
+ }
+ }
+ argc -= l.ind ; argv += l.ind ;
+ }
+ if (!argc) dieusage() ;
+
+ if (mkdir(argv[0], mode) < 0)
+ {
+ struct stat st ;
+ if (errno != EEXIST) strerr_diefu2sys(111, "mkdir ", argv[0]) ;
+ if (stat(argv[0], &st) < 0)
+ strerr_diefu2sys(111, "stat ", argv[0]) ;
+ if (!S_ISDIR(st.st_mode))
+ {
+ errno = ENOTDIR ;
+ strerr_diefu2sys(111, "mkdir ", argv[0]) ;
+ }
+ }
+ dirlen = str_len(argv[0]) ;
+
+ for (; *envp ; envp++)
+ {
+ unsigned int varlen = str_chr(*envp, '=') ;
+ char fn[dirlen + varlen + 2] ;
+ byte_copy(fn, dirlen, argv[0]) ;
+ fn[dirlen] = '/' ;
+ byte_copy(fn + dirlen + 1, varlen, *envp) ;
+ fn[dirlen + 1 + varlen] = 0 ;
+ if (!openwritenclose_suffix(fn, *envp + varlen + 1, str_len(*envp + varlen + 1), "=.tmp"))
+ strerr_diefu2sys(111, "open ", fn) ;
+ }
+ return 0 ;
+}