diff options
| author | Karel Zak | 2016-07-20 13:16:13 +0200 |
|---|---|---|
| committer | Karel Zak | 2016-07-20 13:16:13 +0200 |
| commit | 1132e5aad18cd3cf5326a4afa342fcd246d6aa6d (patch) | |
| tree | f6c297dc6382703fb9798ffe762859846ea681aa /term-utils/agetty.c | |
| parent | Revert "sfdisk: exit with error if rereading partition table fails" (diff) | |
| download | kernel-qcow2-util-linux-1132e5aad18cd3cf5326a4afa342fcd246d6aa6d.tar.gz kernel-qcow2-util-linux-1132e5aad18cd3cf5326a4afa342fcd246d6aa6d.tar.xz kernel-qcow2-util-linux-1132e5aad18cd3cf5326a4afa342fcd246d6aa6d.zip | |
agetty: fix \S usage
If \S without argument used then uninitialized 'varname' compared with
ANSI_COLOR.
Addresses: https://github.com/karelzak/util-linux/issues/329
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'term-utils/agetty.c')
| -rw-r--r-- | term-utils/agetty.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/term-utils/agetty.c b/term-utils/agetty.c index f3fc66714..3ad3612cd 100644 --- a/term-utils/agetty.c +++ b/term-utils/agetty.c @@ -2446,17 +2446,22 @@ static void output_special_char(unsigned char c, struct options *op, { char *var = NULL, varname[64]; - if (get_escape_argument(fp, varname, sizeof(varname))) + /* \S{varname} */ + if (get_escape_argument(fp, varname, sizeof(varname))) { var = read_os_release(op, varname); - else if (!(var = read_os_release(op, "PRETTY_NAME"))) - var = uts.sysname; - if (var) { - if (strcmp(varname, "ANSI_COLOR") == 0) - printf("\033[%sm", var); - else - printf("%s", var); - if (var != uts.sysname) - free(var); + if (var) { + if (strcmp(varname, "ANSI_COLOR") == 0) + printf("\033[%sm", var); + else + fputs(var, stdout); + } + /* \S */ + } else if ((var = read_os_release(op, "PRETTY_NAME"))) { + fputs(var, stdout); + + /* \S and PRETTY_NAME not found */ + } else { + fputs(uts.sysname, stdout); } break; } |