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bash
bash-4.3-pathtemp.patch
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File bash-4.3-pathtemp.patch of Package bash
--- lib/sh/tmpfile.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) --- lib/sh/tmpfile.c +++ lib/sh/tmpfile.c 2015-10-19 13:35:30.869518731 +0000 @@ -36,6 +36,14 @@ #include <stdio.h> #include <errno.h> +#if defined(__linux__) +# include <sys/statfs.h> +# include <unistd.h> +# ifndef TMPFS_MAGIC +# define TMPFS_MAGIC 0x01021994 +# endif +#endif + #include <shell.h> #ifndef errno @@ -60,6 +68,8 @@ static unsigned long filenum = 1L; static char * get_sys_tmpdir () { + static int doshm; + if (sys_tmpdir) return sys_tmpdir; @@ -86,6 +96,31 @@ get_sys_tmpdir () return sys_tmpdir; } +#if defined(__linux__) +static int +emergency_sys_tmpdir () +{ + static char *shm = "/dev/shm"; + static size_t pgsz; + struct statfs fs; + static int doshm; + + if (getuid() != 0) + return 0; + + if (doshm) + return 0; + + doshm++; + + if (statfs(shm, &fs) < 0 || fs.f_type != TMPFS_MAGIC || eaccess(shm, W_OK|X_OK)) + return 0; + + sys_tmpdir = shm; + return 1; +} +#endif + static char * get_tmpdir (flags) int flags; @@ -164,6 +199,7 @@ sh_mktmpfd (nameroot, flags, namep) int fd, tdlen; filename = (char *)xmalloc (PATH_MAX + 1); +enospace: tdir = get_tmpdir (flags); tdlen = strlen (tdir); @@ -177,6 +213,10 @@ sh_mktmpfd (nameroot, flags, namep) free (filename); filename = NULL; } + + if (fd < 0 && errno == ENOSPC && emergency_sys_tmpdir()) + goto enospace; + if (namep) *namep = filename; return fd; @@ -194,6 +234,9 @@ sh_mktmpfd (nameroot, flags, namep) } while (fd < 0 && errno == EEXIST); + if (fd < 0 && errno == ENOSPC && emergency_sys_tmpdir()) + goto enospace; + if (namep) *namep = filename; else
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